Some of our results from previous research at Harvard and UChicago.
Entanglement of nanophotonic quantum memory nodes in a telecom network.
We distributed entanglement between two separate nodes of a quantum network at a rate of up to 1.4 Hz with over 80% fidelity. We demonstrated over 1 second of coherence time for entanglement between Si29 nuclear spins and successfully distributed entanglement over 35 km of deployed telecom fiber in the Boston area. Nature
Robust multi-qubit quantum network node with integrated error detection.
Our platform is based on Silicon Vacancy (SiV) defects in diamond nanophotonic cavities. Each cavity contains a single SiV with two qubits: electron spin, used as a communication qubit, and nuclear spin, used as a memory qubit. We demonstrate spin-photon entanglement with both electron and nuclear spins, as well as higher temperature operation for SiVs under high-strain conditions. Science
Quantum-enabled millimeter wave to optical transduction using neutral atoms.
Here, we present a new hybrid quantum platform for interfacing single optical and mm-wave photons using Rydberg atoms as mediators. Using our system we demonstrate quanutm-limited transduction between optical and mm-wave photons with internal efficiency of 58% and with less than 1 photon of added noise. Nature
A tunable high-Q millimeter wave cavity for hybrid circuit and cavity QED experiments.
We demonstrated a high-Q 3D seamless superconducting cavity compatible with hybrid quantum experiments that require optical access, such as Rydberg atoms, trapped molecules, and hybrid superconducting circuits APL
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Knaut, C. M., Suleymanzade, A., Wei, Y. C., Assumpcao, D. R., Stas, P. J., Huan, Y. Q., … & Lukin, M. D. (2024). Entanglement of nanophotonic quantum memory nodes in a telecom network. Nature, 629(8012), 573-578. Arxiv
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Bersin, E., Sutula, M., Huan, Y. Q., Suleymanzade, A., Assumpcao, D. R., Wei, Y.-C., Stas, P.-J., Knaut, C. M., Knall, E. N., Langrock, C., Sinclair, N., Murphy, R., & Lukin, M. D. (2024). Telecom networking with a diamond quantum memory. PRX Quantum, 5(1). Arxiv.
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Kumar, A., Suleymanzade, A., Stone, M., Taneja, L., Anferov, A., Schuster, D. I., & Simon, J. (2023). Quantum-enabled millimeter wave to optical transduction using neutral atoms. Nature, 615(7953), 614-619. Arxiv
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Stas, P. J., Huan, Y. Q., Machielse, B., Knall, E. N., Suleymanzade, A., Pingault, B., … & Lukin, M. D. (2022). Robust multi-qubit quantum network node with integrated error detection. Science, 378(6619), 557-560. Arxiv
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Knall, E. N., Knaut, C. M., Bekenstein, R., Assumpcao, D. R., Stroganov, P. L., Gong, W., Huan, Y. Q., Stas, P. J., Machielse, B., Suleymanzade, A., & Lukin, M. D. (2022). Efficient source of shaped single photons based on an integrated diamond nanophotonic system. PRL, 129(5), 129(5). Arxiv.
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Suleymanzade, A., Anferov, A., Stone, M., Naik, R. K., Oriani, A., Simon, J., & Schuster, D. (2020). A tunable high-Q millimeter wave cavity for hybrid circuit and cavity QED experiments. APL, 116(10). Arxiv
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Anferov, A., Suleymanzade, A., Oriani, A., Simon, J., & Schuster, D. (2020). Millimeter-wave four-wave mixing via kinetic inductance for quantum devices. PRA, 13(2). , 13(2). Arxiv