Built around the qubit.
Coherence Quantum is developing an integrated cryogenic signalling and control platform for solid-state quantum computers, including superconducting and spin-qubit systems.
STARTING POINT
We start with cryogenic signal-conditioning technologies that protect the qubit environment, before progressing towards higher-density signal interfaces and increasingly integrated control inside the cryostat, closer to the quantum processing unit.
OUR GOAL
Our goal is to help quantum systems scale, enabling more qubits while maintaining the low-noise, high-coherence environment needed for reliable operation.
Built around the qubit.
Coherence Quantum is developing an integrated cryogenic signalling and control platform for solid-state quantum computers, including superconducting and spin-qubit systems.
STARTING POINT
We start with cryogenic signal-conditioning technologies that protect the qubit environment, before progressing towards higher-density signal interfaces and increasingly integrated control inside the cryostat, closer to the quantum processing unit.
OUR GOAL
Our goal is to help quantum systems scale, enabling more qubits while maintaining the low-noise, high-coherence environment needed for reliable operation.
Built around the qubit.
Coherence Quantum is developing an integrated cryogenic signalling and control platform for solid-state quantum computers, including superconducting and spin-qubit systems.
STARTING POINT
We start with cryogenic signal-conditioning technologies that protect the qubit environment, before progressing towards higher-density signal interfaces and increasingly integrated control inside the cryostat, closer to the quantum processing unit.
OUR GOAL
Our goal is to help quantum systems scale, enabling more qubits while maintaining the low-noise, high-coherence environment needed for reliable operation.
THE CHALLENGE
Scaling quantum computers requires better architecture around the qubits.
Progress depends on two fronts: more reliable logical qubits, and lower physical-to-logical qubit overhead.
Increasing the number of physical qubits places greater demands on control and readout electronics, signal conditioning, interconnects, and cryogenic components. This hardware must fit within limited space and cooling power while keeping thermal load, crosstalk, and noise under control.
Physical-qubit performance also affects how efficiently those resources can be used. Protecting coherence and reducing physical errors can lower the number of physical qubits needed for quantum error correction at a given logical error rate.
Together, these challenges make the architecture around the processor central to scaling quantum computers.
01
More qubits
Larger qubit systems need more capacity for control and readout.
02
Limited cooling
Wiring and signal-conditioning electronics must operate within limited cryogenic cooling power.
03
Sensitive environment
Thermal noise and other unwanted electromagnetic disturbances can degrade qubit performance and coherence.
04
Growing complexity
Scaling conventional wiring, signal conditioning, and supporting infrastructure alongside qubit count becomes increasingly difficult, bulky, and costly. Today’s largely one-line-per-function approach becomes harder to sustain as systems grow.
The challenge is to support more reliable quantum computation while keeping infrastructure, cooling requirements and cost manageable.
THE CHALLENGE
Scaling quantum computers requires better architecture around the qubits.
Progress depends on two fronts: more reliable logical qubits, and lower physical-to-logical qubit overhead.
Increasing the number of physical qubits places greater demands on control and readout electronics, signal conditioning, interconnects, and cryogenic components. This hardware must fit within limited space and cooling power while keeping thermal load, crosstalk, and noise under control.
Physical-qubit performance also affects how efficiently those resources can be used. Protecting coherence and reducing physical errors can lower the number of physical qubits needed for quantum error correction at a given logical error rate.
Together, these challenges make the architecture around the processor central to scaling quantum computers.
01
More qubits
Larger qubit systems need more capacity for control and readout.
02
Limited cooling
Wiring and signal-conditioning electronics must operate within limited cryogenic cooling power.
03
Sensitive environment
Thermal noise and other unwanted electromagnetic disturbances can degrade qubit performance and coherence.
04
Growing complexity
Scaling conventional wiring, signal conditioning, and supporting infrastructure alongside qubit count becomes increasingly difficult, bulky, and costly. Today’s largely one-line-per-function approach becomes harder to sustain as systems grow.
The challenge is to support more reliable quantum computation while keeping infrastructure, cooling requirements and cost manageable.
THE CHALLENGE
Scaling quantum computers requires better architecture around the qubits.
Progress depends on two fronts: more reliable logical qubits, and lower physical-to-logical qubit overhead.
Increasing the number of physical qubits places greater demands on control and readout electronics, signal conditioning, interconnects, and cryogenic components. This hardware must fit within limited space and cooling power while keeping thermal load, crosstalk, and noise under control.
Physical-qubit performance also affects how efficiently those resources can be used. Protecting coherence and reducing physical errors can lower the number of physical qubits needed for quantum error correction at a given logical error rate.
Together, these challenges make the architecture around the processor central to scaling quantum computers.
01
More qubits
Larger qubit systems need more capacity for control and readout.
02
Limited cooling
Wiring and signal-conditioning electronics must operate within limited cryogenic cooling power.
03
Sensitive environment
Thermal noise and other unwanted electromagnetic disturbances can degrade qubit performance and coherence.
04
Growing complexity
Scaling conventional wiring, signal conditioning, and supporting infrastructure alongside qubit count becomes increasingly difficult, bulky, and costly. Today’s largely one-line-per-function approach becomes harder to sustain as systems grow.
The challenge is to support more reliable quantum computation while keeping infrastructure, cooling requirements and cost manageable.
OUR technology
Enabling quantum systems to scale
Coherence Quantum is developing an integrated cryogenic signalling and control architecture to support larger qubit systems and more effective use of physical-qubit resources.
Start with the qubit. Build out from there.
Our approach begins with protecting the qubit environment and progresses towards increasingly integrated signal interfaces and cryogenic control.
Together, these technologies form the millikelvin control and interface layer between the QPU and the wider cryogenic control system - combining scalable signal delivery and control with the protected electromagnetic environment needed for high-coherence, low-error operation.
THE CHALLENGE
Protect
01
Cryogenic signal conditioning
Protect the qubit environment
Today
Integrate
02
Cryogenic signal interfaces
Carry more signals through the cryogenic system
In development
Control
03
Cryogenic control
Bring more control inside the fridge and closer to the QPU
Future Direction
Blueprint
04
Integrated architecture
Carry more signals throughthe cryogenic system
Long-term ambition
OUR technology
Enabling quantum systems to scale
Coherence Quantum is developing an integrated cryogenic signalling and control architecture to support larger qubit systems and more effective use of physical-qubit resources.
Start with the qubit. Build out from there.
Our approach begins with protecting the qubit environment and progresses towards increasingly integrated signal interfaces and cryogenic control.
Together, these technologies form the millikelvin control and interface layer between the QPU and the wider cryogenic control system - combining scalable signal delivery and control with the protected electromagnetic environment needed for high-coherence, low-error operation.
THE CHALLENGE
Protect
01
Cryogenic signal conditioning
Protect the qubit environment
Today
Integrate
02
Cryogenic signal interfaces
Carry more signals through the cryogenic system
In development
Control
03
Cryogenic control
Bring more control inside the fridge and closer to the QPU
Future Direction
Blueprint
04
Integrated architecture
Carry more signals throughthe cryogenic system
Long-term ambition
OUR technology
Enabling quantum systems to scale
Coherence Quantum is developing an integrated cryogenic signalling and control architecture to support larger qubit systems and more effective use of physical-qubit resources.
Start with the qubit. Build out from there.
Our approach begins with protecting the qubit environment and progresses towards increasingly integrated signal interfaces and cryogenic control.
Together, these technologies form the millikelvin control and interface layer between the QPU and the wider cryogenic control system - combining scalable signal delivery and control with the protected electromagnetic environment needed for high-coherence, low-error operation.
THE CHALLENGE
Protect
01
Cryogenic signal conditioning
Protect the qubit environment
Today
Integrate
02
Cryogenic signal interfaces
Carry more signals through the cryogenic system
In development
Control
03
Cryogenic control
Bring more control inside the fridge and closer to the QPU
Future Direction
Blueprint
04
Integrated architecture
Carry more signals throughthe cryogenic system
Long-term ambition
SCIENCE
Over two years of focused research and experimental development.
Coherence Quantum builds on research originating from Aalto University’s Quantum Computing and Devices (QCD) group.
Our work combines quantum physics, theory and simulation with RF and microwave engineering, device development and cryogenic experimentation.
We have spent two years of focused research and experimental development on Coherence Quantum’s cryogenic signalling and control platform, building on decades of quantum-device research at Aalto University
01
Multiple generations
of cryogenic prototypes designed, fabricated and tested
02
Cryogenic validation
in dilution-refrigerator environments using state-of-the-art qubit systems
03
4 patent applications
covering core Coherence Quantum technologies
Selected research results, publications and measured performance
SCIENCE
Over two years of focused research and experimental development.
Coherence Quantum builds on research originating from Aalto University’s Quantum Computing and Devices (QCD) group.
Our work combines quantum physics, theory and simulation with RF and microwave engineering, device development and cryogenic experimentation.
We have spent two years of focused research and experimental development on Coherence Quantum’s cryogenic signalling and control platform, building on decades of quantum-device research at Aalto University
01
Multiple generations
of cryogenic prototypes designed, fabricated and tested
02
Cryogenic validation
in dilution-refrigerator environments using state-of-the-art qubit systems
03
4 patent applications
covering core Coherence Quantum technologies
Selected research results, publications and measured performance
SCIENCE
Over two years of focused research and experimental development.
Coherence Quantum builds on research originating from Aalto University’s Quantum Computing and Devices (QCD) group.
Our work combines quantum physics, theory and simulation with RF and microwave engineering, device development and cryogenic experimentation.
We have spent two years of focused research and experimental development on Coherence Quantum’s cryogenic signalling and control platform, building on decades of quantum-device research at Aalto University
01
Multiple generations
of cryogenic prototypes designed, fabricated and tested
02
Cryogenic validation
in dilution-refrigerator environments using state-of-the-art qubit systems
03
4 patent applications
covering core Coherence Quantum technologies
Selected research results, publications and measured performance
WHO WE ARE
From quantum research to quantum infrastructure.
Based in Espoo, Finland, the Coherence Quantum team brings together expertise in quantum physics, cryogenics, RF and microwave engineering, electronics, product development and industrialisation.
We are building dedicated R&D, test and manufacturing capabilities in Espoo, Finland, close to Aalto University and Finland’s growing quantum technology ecosystem.
Our approach combines in-house technology and product development with a global network of specialised manufacturing partners, suppliers and research collaborators. We develop and commercialise our own hardware products while working across the quantum ecosystem to bring new cryogenic technologies from research into scalable systems.
Founders & Founding Advisors
Aashish Sah
Co-founder and CEO
Aashish is a quantum physicist specialising in superconducting qubits and their interaction with the electromagnetic environment.
Suman Kundu
Co-founder & CTO
Suman is an experimental quantum physicist with extensive experience in superconducting quantum circuits, qubit readout, control, and cryogenic measurement.
Erkki Soininen
Co-founder & CPO
Erkki holds a PhD in Physics and brings more than 30 years of international business leadership across start-ups and global companies.
Mikko Möttönen
Founding Advisor
Mikko is an Academy Professor at Aalto University and leads the Quantum Computing and Devices group.
Our Team
We are building a multidisciplinary technical team spanning:
01
Quantum-device theory and simulation
02
RF design and simulation
03
Device fabrication
04
Cryogenic measurements
05
Quantum-device design and experimental development
Across the founding and core technical team, individual experience ranges from 5+ to 30+ years, with the technical specialists bringing typically 7–10+ years of experience in their respective fields.
WHO WE ARE
From quantum research to quantum infrastructure.
Based in Espoo, Finland, the Coherence Quantum team brings together expertise in quantum physics, cryogenics, RF and microwave engineering, electronics, product development and industrialisation.
We are building dedicated R&D, test and manufacturing capabilities in Espoo, Finland, close to Aalto University and Finland’s growing quantum technology ecosystem.
Our approach combines in-house technology and product development with a global network of specialised manufacturing partners, suppliers and research collaborators. We develop and commercialise our own hardware products while working across the quantum ecosystem to bring new cryogenic technologies from research into scalable systems.
Founders & Founding Advisors
Aashish Sah
Co-founder and CEO
Aashish is a quantum physicist specialising in superconducting qubits and their interaction with the electromagnetic environment.
Suman Kundu
Co-founder & CTO
Suman is an experimental quantum physicist with extensive experience in superconducting quantum circuits, qubit readout, control, and cryogenic measurement.
Erkki Soininen
Co-founder & CPO
Erkki holds a PhD in Physics and brings more than 30 years of international business leadership across start-ups and global companies.
Mikko Möttönen
Founding Advisor
Mikko is an Academy Professor at Aalto University and leads the Quantum Computing and Devices group.
Our Team
We are building a multidisciplinary technical team spanning:
01
Quantum-device theory and simulation
02
RF design and simulation
03
Device fabrication
04
Cryogenic measurements
05
Quantum-device design and experimental development
Across the founding and core technical team, individual experience ranges from 5+ to 30+ years, with the technical specialists bringing typically 7–10+ years of experience in their respective fields.
WHO WE ARE
From quantum research to quantum infrastructure.
Based in Espoo, Finland, the Coherence Quantum team brings together expertise in quantum physics, cryogenics, RF and microwave engineering, electronics, product development and industrialisation.
We are building dedicated R&D, test and manufacturing capabilities in Espoo, Finland, close to Aalto University and Finland’s growing quantum technology ecosystem.
Our approach combines in-house technology and product development with a global network of specialised manufacturing partners, suppliers and research collaborators. We develop and commercialise our own hardware products while working across the quantum ecosystem to bring new cryogenic technologies from research into scalable systems.
Founders & Founding Advisors
Aashish Sah
Co-founder and CEO
Aashish is a quantum physicist specialising in superconducting qubits and their interaction with the electromagnetic environment.
Suman Kundu
Co-founder & CTO
Suman is an experimental quantum physicist with extensive experience in superconducting quantum circuits, qubit readout, control, and cryogenic measurement.
Erkki Soininen
Co-founder & CPO
Erkki holds a PhD in Physics and brings more than 30 years of international business leadership across start-ups and global companies.
Mikko Möttönen
Founding Advisor
Mikko is an Academy Professor at Aalto University and leads the Quantum Computing and Devices group.
Our Team
We are building a multidisciplinary technical team spanning:
01
Quantum-device theory and simulation
02
RF design and simulation
03
Device fabrication
04
Cryogenic measurements
05
Quantum-device design and experimental development
Across the founding and core technical team, individual experience ranges from 5+ to 30+ years, with the technical specialists bringing typically 7–10+ years of experience in their respective fields.
Investors
Lifeline Ventures is Coherence Quantum’s lead investor
The Helsinki-based early-stage venture capital firm has backed technology companies across Finland’s startup and deep-tech ecosystem.
Lifeline brings strategic guidance, international networks, and long-term support as Coherence Quantum develops its technology and product platform.
Mårten Mickos
Mårten Mickos is a Finnish technology entrepreneur and business leader with more than two decades of experience building and scaling global technology companies. As CEO of MySQL, he grew the company into a global open-source leader before its $1 billion acquisition by Sun Microsystems.
Placeholder
Mårten Mickos is a Finnish technology entrepreneur and business leader with more than two decades of experience building and scaling global technology companies. As CEO of MySQL, he grew the company into a global open-source leader before its $1 billion acquisition by Sun Microsystems.
Investors
Lifeline Ventures is Coherence Quantum’s lead investor
The Helsinki-based early-stage venture capital firm has backed technology companies across Finland’s startup and deep-tech ecosystem.
Lifeline brings strategic guidance, international networks, and long-term support as Coherence Quantum develops its technology and product platform.
Mårten Mickos
Investors
Lifeline Ventures is Coherence Quantum’s lead investor
The Helsinki-based early-stage venture capital firm has backed technology companies across Finland’s startup and deep-tech ecosystem.
Lifeline brings strategic guidance, international networks, and long-term support as Coherence Quantum develops its technology and product platform.
Mårten Mickos
Mårten Mickos is a Finnish technology entrepreneur and business leader with more than two decades of experience building and scaling global technology companies. As CEO of MySQL, he grew the company into a global open-source leader before its $1 billion acquisition by Sun Microsystems.
Placeholder
Mårten Mickos is a Finnish technology entrepreneur and business leader with more than two decades of experience building and scaling global technology companies. As CEO of MySQL, he grew the company into a global open-source leader before its $1 billion acquisition by Sun Microsystems.
Build what comes next with us.
PARTNER WITH US
We work with quantum-computer builders and technology partners through product supply, pilot projects, customer-specific development and technology partnerships.
If you’re developing a quantum system, exploring cryogenic signalling and control requirements, or building complementary technology, talk to us.
JOIN US
We start with technologies that protect the qubit environment and build towards integrated interfaces and control inside the fridge, closer to the quantum processing unit.
We are currently looking for experienced cryogenic, fabrication, and ASIC designer to join us in building the control layer for quantum computers.
Let’s build the infrastructure
for scalable quantum computing.
Send us an email
Build what comes next with us.
PARTNER WITH US
We work with quantum-computer builders and technology partners through product supply, pilot projects, customer-specific development and technology partnerships.
If you’re developing a quantum system, exploring cryogenic signalling and control requirements, or building complementary technology, talk to us.
JOIN US
We start with technologies that protect the qubit environment and build towards integrated interfaces and control inside the fridge, closer to the quantum processing unit.
We are currently looking for experienced cryogenic, fabrication, and ASIC designer to join us in building the control layer for quantum computers.
Let’s build the infrastructure
for scalable quantum computing.
Send us an email
Build what comes next with us.
PARTNER WITH US
We work with quantum-computer builders and technology partners through product supply, pilot projects, customer-specific development and technology partnerships.
If you’re developing a quantum system, exploring cryogenic signalling and control requirements, or building complementary technology, talk to us.
JOIN US
We start with technologies that protect the qubit environment and build towards integrated interfaces and control inside the fridge, closer to the quantum processing unit.
We are currently looking for experienced cryogenic, fabrication, and ASIC designer to join us in building the control layer for quantum computers.
Let’s build the infrastructure
for scalable quantum computing.
Send us an email