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Senior Quantum Architect, Fault Tolerance



Posted on Tuesday, December 12, 2023

PsiQuantum is on a mission to build the world’s first utility-scale, 1 million-plus qubit quantum computer, powered by breakthroughs in silicon photonics and quantum architecture. We were founded in 2015 by the world’s foremost experts in photonic quantum computing and have assembled a world class team dedicated to bringing the world-changing benefits of quantum computing into reality.

Quantum computing is anticipated to unlock the solutions to otherwise impossible computational tasks, with impact across science, technology, and business. By harnessing the laws of quantum physics, quantum computers are expected to dramatically outperform even the most powerful existing (or future) supercomputers and offer the potential to enable extraordinary advances across a broad range of applications including climate, energy, healthcare, finance, agriculture, transportation, materials design, and more, as well as deliver entirely new industries.

PsiQuantum is uniquely positioned to deliver on the promise of quantum computing. We have already demonstrated that it’s possible to manufacture core quantum components using the standard and scalable manufacturing processes of a world-leading semiconductor fab.

Our team is working across the full stack of quantum computing, from hardware design, manufacturing, and packaging through to quantum architecture and quantum algorithms. We’re a highly integrated, collaborative group and love tackling problems that span across interfaces.

There’s more work to be done and we are looking for exceptional talent to join us on this extraordinary journey!

Job Summary:

Quantum architects drive research and development of photonic quantum computing architectures, from entanglement generation through to encoded logic and error correction. Quantum architects in fault tolerance research and develop fault-tolerant protocols, error correcting codes, decoding methods, and efficient schemes for universal fault tolerant logic, working closely with engineers to implement and simulate these approaches to evaluate their performance. This development is highly integrated with the full architecture development, from optical architecture to algorithms and applications. Candidates in this role will be work on the interface of optical architecture and fault-tolerance to develop low-level fault-tolerant primitives for logical qubit generation.

Candidates should have a strong background in fault-tolerant quantum computing, with experience in some of the following areas: error-correction and decoding, linear optical quantum computing, error modelling, logical gate design, magic state distillation. Competence in programming using Python (or similar) and experience with machine learning algorithms is desirable.

  • Design and develop new fault-tolerant protocols for generating logical qubits using linear optical primitives.
  • Model the origin and propagation of errors.
  • Simulating and benchmarking different protocols.
  • Design and develop new fault-tolerant protocols for high-level logic.
  • Co-develop the architecture in collaboration with the wider team, communicating results.


  • Degree in Physics, Math or Computer Science or equivalent required. PhD in Physics, Math or Computer Science, with a focus on quantum information theory or quantum computation preferred.
  • 3+ years of relevant academic or industry research experience in quantum error correction and fault-tolerance.
  • Knowledge of quantum information required. Familiarity with quantum networks, quantum graph states, quantum error-correcting codes, linear optical quantum computing, error modelling, graphical calculus (e.g, tensor networks, ZX calculus) strongly preferred.
  • Experience working with quantum LDPC codes is highly desirable.
  • Experience with quantum algorithms or compiling in the regime of fault tolerant gates preferred.
  • Proven team player with an ability to work effectively across departments, sites, and time zones.
  • Ability to work independently and contribute in fast-moving start-up environment.
  • Experience programming in Python, C++ or similar languages is desirable.
  • Competent use of collaborative software development tools (e.g., GitHub) is desirable.

PsiQuantum provides equal employment opportunity for all applicants and employees. PsiQuantum does not unlawfully discriminate on the basis of race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), gender identity, gender expression, national origin, ancestry, citizenship, age, physical or mental disability, military or veteran status, marital status, domestic partner status, sexual orientation, genetic information, or any other basis protected by applicable laws.

We are not accepting unsolicited resumes from employment agencies.

The range below reflects the minimum and maximum target range for new hire base salary across all US locations. Actual compensation may vary outside of this range and is dependent on various factors including but not limited to a candidate's qualifications including relevant education and training, competencies, experience, geographic location, and business needs. Base pay is only one part of the total compensation package. Full time roles are eligible for equity and benefits. Base pay is subject to change and may be modified in the future.

For a fully qualified candidate, the expected pay range is:

Pay Range
$134,000$185,000 USD