Generating spatially entangled itinerant photons with waveguide quantum electrodynamics
[1];
[1];
[2];
[2];
[4]
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA., Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
- MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02420, USA.
- Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA., Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA., MIT Lincoln Laboratory, 244 Wood Street, Lexington, MA 02420, USA., Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Realizing a fully connected network of quantum processors requires the ability to distribute quantum entanglement. For distant processing nodes, this can be achieved by generating, routing, and capturing spatially entangled itinerant photons. In this work, we demonstrate the deterministic generation of such photons using superconducting transmon qubits that are directly coupled to a waveguide. In particular, we generate two-photon N00N states and show that the state and spatial entanglement of the emitted photons are tunable via the qubit frequencies. Using quadrature amplitude detection, we reconstruct the moments and correlations of the photonic modes and demonstrate state preparation fidelities of 84%. Our results provide a path toward realizing quantum communication and teleportation protocols using itinerant photons generated by quantum interference within a waveguide quantum electrodynamics architecture.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; US Air Force Office of Scientific Research (AFOSR)
- Grant/Contract Number:
- AC02-05CH11231; FA8721-05-C-0002
- OSTI ID:
- 1670849
- Alternate ID(s):
- OSTI ID: 1817111
- Journal Information:
- Science Advances, Journal Name: Science Advances Vol. 6 Journal Issue: 41; ISSN 2375-2548
- Publisher:
- American Association for the Advancement of Science (AAAS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Phonon-mediated quantum state transfer and remote qubit entanglement
Hybrid Entanglement between Optical Discrete Polarizations and Continuous Quadrature Variables