Measurement of geometric phase for mixed states using single photon interferometry

Marie Ericsson; Daryl Achilles; Julio T. Barreiro; David Branning; Nicholas A. Peters; Paul G. Kwiat

doi:10.1103/PhysRevLett.94.050401

Measurement of geometric phase for mixed states using single photon interferometry

Marie Ericsson, Daryl Achilles, Julio T. Barreiro, David Branning, Nicholas A. Peters, Paul G. Kwiat

Research output: Contribution to journal › Article › peer-review

77 Scopus citations

Abstract

Geometric phase may enable inherently fault-tolerant quantum computation. However, due to potential decoherence effects, it is important to understand how such phases arise for mixed input states. We report the first experiment to measure mixed-state geometric phases in optics, using a Mach-Zehnder interferometer, and polarization mixed states that are produced in two different ways: decohering pure states with birefringent elements; and producing a nonmaximally entangled state of two photons and tracing over one of them, a form of remote state preparation.

Original language	English
Article number	050401
Journal	Physical Review Letters
Volume	94
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevLett.94.050401
State	Published - Feb 11 2005
Externally published	Yes

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10.1103/PhysRevLett.94.050401

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abstract = "Geometric phase may enable inherently fault-tolerant quantum computation. However, due to potential decoherence effects, it is important to understand how such phases arise for mixed input states. We report the first experiment to measure mixed-state geometric phases in optics, using a Mach-Zehnder interferometer, and polarization mixed states that are produced in two different ways: decohering pure states with birefringent elements; and producing a nonmaximally entangled state of two photons and tracing over one of them, a form of remote state preparation.",

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AU - Ericsson, Marie

AU - Achilles, Daryl

AU - Barreiro, Julio T.

AU - Branning, David

AU - Peters, Nicholas A.

AU - Kwiat, Paul G.

PY - 2005/2/11

Y1 - 2005/2/11

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AB - Geometric phase may enable inherently fault-tolerant quantum computation. However, due to potential decoherence effects, it is important to understand how such phases arise for mixed input states. We report the first experiment to measure mixed-state geometric phases in optics, using a Mach-Zehnder interferometer, and polarization mixed states that are produced in two different ways: decohering pure states with birefringent elements; and producing a nonmaximally entangled state of two photons and tracing over one of them, a form of remote state preparation.

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DO - 10.1103/PhysRevLett.94.050401

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Measurement of geometric phase for mixed states using single photon interferometry

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