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AssigneeThe University of Chicago
InventorsDavid Awschalom, Berk Diler, William Koehl, Samuel James Whiteley
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Methods and devices are disclosed for implementing quantum information processing based on electron spins in semiconductor and transition metal compositions. The transition metal electron orbitals split under semiconductor crystal field. The electron ground states are used as qubits. The transitions between the ground states involve electron spin flip. The semiconductor and transition metal compositions may be further included in optical cavities to facilitate quantum information processing. Quantum logic operations may be performed using single color or two color coherent resonant optical excitations via an excited electron state.
-24. (canceled)
A quantum information processing or storage device comprising:
The device of claim 1, wherein an atomic species of the non-rare earth transition metal ions is selected based on nuclear spin of the non-rare earth transition metal ions.
The device of claim 1, wherein the non-rare earth transition metal ions comprise an isotope of the non-rare earth transition metal ion that is free of net nuclear spin.
The device of claim 1, wherein an atomic species for the semiconductor crystal host is selected based on nuclear spin of the semiconductor crystal host.
The device of claim 1, wherein a nuclear profile of the semiconductor crystal host is tuned based on isotopic engineering.
The device of claim 1, wherein a nuclear profile of the semiconductor crystal host and the non-rare earth transition metal ions is tuned based on isotopic engineering of the semiconductor crystal host and the non-rare earth transition metal ions.
The device of claim 1, wherein the at least one optical element comprises an optical microcavity configured to at least partially enclose the semiconductor crystal composition.
The device of claim 7, wherein information stored in a single or plurality of the non-rare earth transition metal ions generated using the optical excitations is retrieved at a later time.
The device of claim 7, wherein an electromagnetic wave is stored in a single or plurality of the non-rare earth transition metal ions in the optical microcavity for later retrieval.
The device of claim 7, wherein a single or plurality of the non-rare earth transition metal ions are configured to emit single photons.
The device of claim 10, wherein the single photons are controlled to be emitted from the non-rare earth transition metal ions on demand.
The device of claim 1, wherein a single non-rare earth transition metal ion or a plurality of non-rare earth transition metal ions are configured to store an electromagnetic wave using a non-linear optical phenomenon.
The device of claim 12, wherein the non-linear optical phenomenon comprises electromagnetically induced transparency.
The device of claim 1, wherein a single non-rare earth transition metal ion or a plurality of non-rare earth transition metal ions are configured to absorb and store an electromagnetic wave and emit the stored electromagnetic wave at a later time using a DLCZ protocol.
The device of claim 1, wherein a single non-rare earth transition metal ion or a plurality of non-rare earth transition metal ions are configured to absorb and store an electromagnetic wave and emit the stored electromagnetic wave at a later time using an atomic frequency comb technique.
The device of claim 1, wherein a single non-rare earth transition metal ion or a plurality of non-rare earth transition metal ions are configured to absorb and store an electromagnetic wave and emit the stored electromagnetic wave at a later time using a controlled reversible inhomogeneous broadening technique.
The device of claim 1, wherein a single non-rare earth transition metal ion or a plurality of non-rare earth transition metal ions are configured to exchange quantum information with an electromagnetic wave using an off-resonant Faraday interaction technique.
The device of claim 1, wherein a static magnetic field is selected and applied to the device to facilitate the quantum information processing or quantum information storage.
The device of claim 1, further configured as a quantum repeater.
In a quantum information processing device comprising a semiconductor crystal host in which each of a plurality of lattice sites of the semiconductor crystal host are substituted with a non-rare earth transition metal ion having d-N electrons, a method for quantum information processing or quantum information storage, comprising:
Dependencies are inferred from the claim text.