| Title: |
Quantum Entanglement between Optical and Microwave Photonic Qubits |
| Authors: |
Meesala, Srujan; Lake, David; Wood, Steven; Chiappina, Piero; Zhong, Changchun; Beyer, Andrew D.; Shaw, Matthew D.; Jiang, Liang; Painter, Oskar |
| Contributors: |
Office of Science; Institute for Quantum Information and Matter, California Institute of Technology; Gordon and Betty Moore Foundation; Kavli Nanoscience Institute, California Institute of Technology; Air Force Research Laboratory; National Science Foundation; ARO/LPS; National Quantum Information Science Research Centers; NSF Physics Frontiers Center; AWS Center for Quantum Computing |
| Source: |
Physical Review X ; volume 14, issue 3 ; ISSN 2160-3308 |
| Publisher Information: |
American Physical Society (APS) |
| Publication Year: |
2024 |
| Description: |
Entanglement is an extraordinary feature of quantum mechanics. Sources of entangled optical photons were essential to test the foundations of quantum physics through violations of Bell’s inequalities. More recently, entangled many-body states have been realized via strong nonlinear interactions in microwave circuits with superconducting qubits. Here, we demonstrate a chip-scale source of entangled optical and microwave photonic qubits. Our device platform integrates a piezo-optomechanical transducer with a superconducting resonator which is robust under optical illumination. We drive a photon-pair generation process and employ a dual-rail encoding intrinsic to our system to prepare entangled states of microwave and optical photons. We place a lower bound on the fidelity of the entangled state by measuring microwave and optical photons in two orthogonal bases. This entanglement source can directly interface telecom wavelength time-bin qubits and gigahertz frequency superconducting qubits, two well-established platforms for quantum communication and computation, respectively. Published by the American Physical Society 2024 |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1103/physrevx.14.031055 |
| DOI: |
10.1103/PhysRevX.14.031055 |
| DOI: |
10.1103/PhysRevX.14.031055/fulltext |
| Availability: |
https://doi.org/10.1103/physrevx.14.031055; https://link.aps.org/article/10.1103/PhysRevX.14.031055; http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevX.14.031055/fulltext |
| Rights: |
https://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.9EB0EE3A |
| Database: |
BASE |