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A recently funded collaborative project between the ESnet division of Lawrence Berkeley National Laboratory (LBNL) and QuEra Computing is seeking a highly motivated Postdoctoral Researcher to explore a novel optical interconnect approach for distributed quantum computing with neutral atoms. This research aims to integrate atomic ensemble qubits into optical tweezer arrays of single atoms, enabling quantum networking between state-of-the-art quantum processors and paving the way for scalable quantum computers.

This project will involve theoretical and numerical analysis of Rydberg mediated interactions of a single atom with a micro-ensemble of atoms that can be used to collectively emit and store single photons for high-rate, high fidelity remote entanglement without the need of optical resonators. As a Postdoc on this project, you will play a central role in advancing this cutting-edge research and collaborate closely with researchers and engineers from both the ESnet and QuEra teams. Your work will directly influence the experimental and engineering directions needed to realize large-scale, fault-tolerant quantum computers.

Titled "Scalable Neutral-Atom Quantum Computing via Local-Area Quantum Communications Enabled by Atomic Ensemble Qubits," this two-year DOE-funded initiative brings together leading experts from ESnet-developers of one of the largest quantum networking testbeds-and QuEra, a pioneering quantum computing startup. This government-industry collaboration offers a unique opportunity to help shape the future of data center-scale quantum computing by leveraging QuEra's state-of-the-art technologies and the dynamic research environments of LBNL and the University of California, Berkeley.

What You Will Do:

• Develop theoretical frameworks for quantum light-matter interactions in the context of distributed quantum computing.

• Model and analyze Rydberg-mediated interactions for both single-atom and ensemble qubits. 

• Analyze optical trapping and transport dynamics of single atoms and ensembles. 

• Evaluate and benchmark atomic ensemble qubits as optical quantum memories and deterministic single-photon sources for high-rate, high-fidelity remote entanglement between quantum processors. 

• Investigate the integration of ensemble qubits into multi-zone processor architectures to enable scalable, fault-tolerant quantum computing.

• Collaborate closely with experimentalists and engineers to guide the development and implementation of networked quantum processors.

Additional Responsibilities as needed:

• Assist in project coordination and contribute to the preparation of project deliverables.

• Disseminate research findings through publications in high-impact journals and presentations at national and international conferences.

• Travel occasionally for collaboration and/or research dissemination.

What is Required:

• Ph.D. and/or previous Postdoc studies in at least one of the following areas: quantum optics, quantum networking, quantum computing. 

• Strong theoretical background in the trapping and coherent manipulation of neutral atoms for quantum information processing and quantum communication.

• Extensive experience in theoretical and numerical studies of quantum light-matter interfaces and Rydberg interactions with applications to single-atom and atomic-ensemble neutral-atom platforms.  

• Proven expertise in the physical modelling and performance analysis of key components of the neutral-atom systems, including (but not limited) to spin-wave quantum memories, single-photon sources, Rydberg-based quantum gates. 

• Solid understanding of fault-tolerance aspect in quantum information processing and its implications for scalable architectures.  

Desired Qualifications:

• Familiarity with experimental implementations, including relevant hardware, tools, and control systems.

• Demonstrated ability to work effectively in a collaborative, interdisciplinary teams composed of scientists, engineers, and students from diverse backgrounds.

• Strong written and oral communication skills, with experience presenting research findings in group settings and at national/international conferences.

Notes:

• This is a full-time, 2 year, postdoctoral appointment with the possibility of renewal based upon satisfactory job performance, continuing availability of funds and ongoing operational needs. You must have less than 3 years of paid postdoctoral experience. Salary for Postdoctoral positions depends on years of experience post-degree.

• This position is represented by a union for collective bargaining purposes.

• The monthly salary range for this position is $8,321-$10,418 and is expected to start at $8,321 or above. Postdoctoral positions are paid on a step schedule per union contract and salaries will be predetermined based on postdoctoral step rates. Each step represents one full year of completed post-Ph.D. postdoctoral experience.

• This position is subject to a background check. Any convictions will be evaluated to determine if they directly relate to the responsibilities and requirements of the position. Having a conviction history will not automatically disqualify an applicant from being considered for employment.

• Work may be performed on-site, hybrid, full-time telework. The primary location for this role is Lawrence Berkeley National Lab, 1 Cyclotron Road, Berkeley, CA. Work must be performed within the United States. A REAL ID or other acceptable form of identification is required to access Berkeley Lab sites.

Want to learn more about working at Berkeley Lab? Please visit: careers.lbl.gov

Equal Employment Opportunity Employer: The foundation of Berkeley Lab is our Stewardship Values: Team Science, Service, Trust, Innovation, and Respect; and we strive to build community with these shared values and commitments. Berkeley Lab is an Equal Opportunity Employer. We heartily welcome applications from all who could contribute to the Lab's mission of leading scientific discovery, excellence, and professionalism. In support of our rich global community, all qualified applicants will be considered for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, protected veteran status, or other protected categories under State and Federal law.

Misconduct Disclosure Requirement: As a condition of employment, the finalist will be required to disclose if they are subject to any final administrative or judicial decisions within the last seven years determining that they committed any misconduct, are currently being investigated for misconduct, left a position during an investigation for alleged misconduct, or have filed an appeal with a previous employer.