Photonic quantum memory with time-bin entangled photon storage
AssigneeThe MITRE Corporation
InventorsGerald N. Gilbert, Jonathan S. Hodges, Stephen Peter Pappas, Yaakov Shmuel Weinstein
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Abstract
A photonic quantum memory is provided. The photonic quantum memory includes entanglement basis conversion module configured to receive a first polarization-entangled photon pair and to produce a second entangled photon pair. The second polarization-entangled photon pair can he a time-bin entangled or a propagation direction-entangled photon pair. The photonic quantum memory further includes a photonic storage configured to receive the second entangled photon pair from the basis conversion module and to store the second entangled photon pair.
Claims20
A photonic quantum memory, comprising:
- a polarization-to-time-bin entanglement conversion (P2T) module configured to receive a polarization-entangled photon pair and to generate a time-bin entangled photon pair with a first polarization orientation;
- a storage configured to:
- store the time-bin entangled photon pair with the first polarization orientation, and
- convert the time-bin entangled photon pair with the first polarization orientation to a time-bin entangled photon pair with a second polarization orientation;
- wherein the storage comprises a linear race track photonic memory with:
- an entrance fiber optic path;
- an exit fiber optic path;
- a first controllable mirror coupled to the entrance fiber optic path;
- a second controllable mirror coupled to the exit fiber optic path;
- and
- a storage fiber optic path that couples the first controllable mirror and the second controllable mirror;
- and
- a time-bin-to-polarization entanglement conversion (T2P) module configured to receive the time-bin entangled photon pair with the second polarization orientation and to re-generate the polarization-entangled photon pair with the first polarization orientation.
A photonic quantum memory, comprising:
- a first basis conversion module configured to receive a polarization-based photon and to produce a time-bin photon with a first polarization orientation;
- a storage configured to:
- store the time-bin photon with the first polarization orientation, and
- convert the time-bin photon with the first polarization orientation to a time-bin photon with a second polarization orientation;
- wherein the storage comprises a linear race track photonic memory with:
- an entrance fiber optic path;
- an exit fiber optic path;
- a first controllable mirror coupled to the entrance fiber optic path;
- a second controllable mirror coupled to the exit fiber optic path;
- and
- a storage fiber optic path that couples the first controllable mirror and the second controllable mirror;
- and
- a second basis conversion module configured to receive the time-bin entangled photon with the second polarization orientation and to re-generate the polarization-entangled photon with the first polarization orientation.
Dependencies are inferred from the claim text.