The Mitre Corporation

Gerald N Gilbert

Yaakov Shmuel Weinstein

Stephen Peter Pappas

Michael D Hamrick

Jonathan S Hodges

Anthony Donadio

Alexander J Dufort

Martin A Jaspan

Jayson L Cohen

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 be 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.

Photonic quantum memory with polarization-to-time entanglement conversion and time-to-polarization entanglement conversion

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.

Photonic quantum memory with time-bin entangled photon storage

Embodiments of the present invention provide systems and methods to robustly inter-convert between polarization-entangled photon pairs and time-entangled photon pairs, such that produced polarization-entangled photons pairs can be converted into time-entangled photon pairs, stored as time-entangled photon pairs to preserve the entanglement for longer periods of time, and then converted back to polarization-entangled photon pairs when ready for manipulation, processing, and measurement by a quantum application.

Method and apparatus for quantum mechanical entanglement protection

The resolution obtained by an imaging system utilizing separable photons can be achieved by an imaging system making use of entangled photons. Since resolution is not being increased from the separable-photon system, the imaging system utilizing entangled photons can take advantage of a smaller aperture. This results in a smaller and lighter system, which can be especially valuable in satellite imaging where weight and size play a vital role.

Quantum sensor miniaturization utilizing entangled photon signals

A method of creating two-dimensional quantum computational cluster states is demonstrated that is considerably more efficient than previously proposed approaches. The method uses local unitaries and type-I fusion operations. The increased efficiency of the method compared to previously proposed constructions is obtained by identifying and exploiting local equivalence properties inherent in cluster states.

Efficient construction of quantum computational clusters using Hadamard rotations

Wave vector division multiplexing ('WVDM') is a method of free-space multiplexing for optical communications. In WVDM, wave vectors of individual laser beams are manipulated so that each individual laser beam has a unique wave vector. These individual laser beams are multiplexed into an aggregate beam, which is transmitted to a receiver. The receiver separates the individual laser beams on the basis of their unique wave vectors. One area where WVDM is useful is in quantum cryptography. WVDM can also be combined with traditional wavelength division multiplexing ('WDM') to increase throughput even further.

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McLean, VA, United States of America

Gerald N Gilbert