Senior Engineer Quantum Characterization Verification and Validation

Quantum computing holds the promise of humanitys mastery over the natural world but only if we can build a real quantum computer. PsiQuantum is on a mission to build the first real useful quantum computers capable of delivering the worldchanging applications that the technology has long promised. We know that means we will need to build a system with roughly 1 million qubits that supports fault tolerant error correction within a scalable architecture and a data center footprint.

By harnessing the laws of quantum physics quantum computers can provide exponential performance increases over todays most powerful supercomputers offering the potential for extraordinary advances across a broad range of industries including climate energy healthcare pharmaceuticals finance agriculture transportation materials design and many more.

PsiQuantum has determined the fastest path to delivering a useful quantum computer years earlier than the rest of the industry. Our architecture is based on silicon photonics which gives us the ability to produce our components at Tier1 semiconductor fabs such as GlobalFoundries where we leverage highvolume semiconductor manufacturing processes the same processes that are already producing billions of chips for telecom and consumer electronics applications. We also benefit from the quantum mechanics reality that photons dont feel heat or electromagnetic interference allowing us to take advantage of existing cryogenic cooling systems and industry standard fiber connectivity.

In 2024 PsiQuantum announced two governmentfunded projects to support the buildout of our first Quantum Data Centers and utilityscale quantum computers in Brisbane Australia and Chicago Illinois. Both projects are backed by nations that understand quantum computings potential impact and the need to scale this technology to unlock that potential. And we wont just be building the hardware but also the fault tolerant quantum applications that will provide industrytransforming results.

Quantum computing is not just an evolution of the decadesold advancement in compute power. It provides the key to mastering our future not merely discovering it. The potential is enormous and we have the plan to make it real. Come join us.

Theres much more work to be done and we are looking for exceptional talent to join us on this extraordinary journey!

Job Summary:

At PsiQuantum we are developing and deploying exciting new technologies in the pursuit of a faulttolerant photonic quantum computer. With these new tools such as ultralow loss SiN photonics highefficiency waveguideintegrated photon numberresolving detectors and photon multiplexers we are moving into exciting and new areas of multiphoton and multiqubit quantum optics which have never been accessible to previous hardware. We are seeking an experienced researcher to lead the development of new methods for characterizing entangled states of photonic qubits identifying and diagnosing qubit errors.

Responsibilities:

• Provide technical leadership in the design and of tests on PsiQuantums quantum computer prototypes to quantify photonic qubit performance and diagnose sources of Pauli error and qubit erasure.
• Develop and document novel data collection and analysis techniques to validate and verify entangled qubit states.
• Define diagnostic photon statistics to be collected during system operations to identify and diagnose qubit error mechanisms and system faults.
• Define and document requirements for the collection analysis and storage of data and work with the software and electronics teams to implement these.
• Develop models for quantum system performance based on test data from systemlevel tests. Work with the Systems Architecture team and other engineering teams to validate their engineering models against the test results.
• Communicate quantum performance outcomes broadly to internal stakeholders.

Experience/Qualifications:

• Ph.D. or equivalent experience in Electrical Engineering Physics or a related field with demonstrated deep subject matter expertise in quantum characterization verification and validation. Postdoctoral experience preferred.
• Demonstrated ability to develop novel methods to characterize entangled qubit states.
• Software development for data analysis and quantum modelling (python preferred).
• Demonstrated experience with some or all of the following preferred:
  • Quantum optics photonic qubits integrated silicon photonics
  • Fusionbased measurementbased or cluster state models of quantum computation
  • Quantum error correction
• Proven team player with an ability to work effectively across departments sites time zones.
• Ability to work independently with limited direction and own responsibility for delivering validation objectives.
• Excellent verbal and written communication skills with an ability to communicate effectively to a variety of audiences including senior leadership and technical experts.
• Demonstrated interest in PsiQuantums mission and vision for quantum computing with an ability to contribute within a fastpaced startup environment consistent with PsiQuantums values of communication collaboration respect results and challenge.

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.

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