Optical: systems and elements – Optical computing without diffraction
Reexamination Certificate
2007-02-20
2007-02-20
Jackson, Jr., Jerome (Department: 2815)
Optical: systems and elements
Optical computing without diffraction
C359S108000, C708S191000, C708S831000
Reexamination Certificate
active
10812461
ABSTRACT:
An apparatus for generating a quantum state of a two-qubit system including two qubits, each qubit being represented by a particle which invariably travels through one of two paths, includes a quantum gate composed of an interferometer for implementing an-interaction-free measurement. The apparatus receives two particles having no correlation and generates a Bell state with asymptotic probability 1. A Bell measurement of a state of a two-qubit system is performed by observing a quantum gate composed of the interferometer after the quantum gate has processed the state and selecting the state from the Bell bases. An approximate fidelity of a quantum gate composed of the interferometer is calculated, if an absorption probability with which a first particle absorbs a second particle in the interferometer is less than 1, under the condition that the number of times the second particle hits beam splitters in the interferometer is sufficiently large.
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Canon USA , Inc. Intellectual Property Division
Jackson, Jr. Jerome
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