Fast measurements of entangled photons

S. X. Wang; P. Moraw; D. R. Reilly; J. B. Altepeter; G. S. Kanter

doi:10.1109/JLT.2012.2231854

Fast measurements of entangled photons

S. X. Wang^*, P. Moraw, D. R. Reilly, J. B. Altepeter, G. S. Kanter

^*Corresponding author for this work

Electrical and Computer Engineering

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

12 Scopus citations

Abstract

We report on a system for the generation and measurement of polarization entangled photons. High speed quantum state tomographies with a raw fidelity of > 91\% with respect to an ideal entangled state are recorded in < 2 seconds, with longer-term accidental-count subtracted fidelities exceeding 99%. Two-photon interference measurements are recorded using an automated alignment and measurement procedure with the signal distributed over 20 km of fiber. These high speed measurement methods are useful for high rate monitoring of entangled states.

Original language	English (US)
Article number	6374627
Pages (from-to)	707-714
Number of pages	8
Journal	Journal of Lightwave Technology
Volume	31
Issue number	5
DOIs	https://doi.org/10.1109/JLT.2012.2231854
State	Published - 2013

Keywords

Quantum entanglement
optical polarization
optical signal detection

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1109/JLT.2012.2231854

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keywords = "Quantum entanglement, optical polarization, optical signal detection",

author = "Wang, {S. X.} and P. Moraw and Reilly, {D. R.} and Altepeter, {J. B.} and Kanter, {G. S.}",

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T1 - Fast measurements of entangled photons

AU - Wang, S. X.

AU - Moraw, P.

AU - Reilly, D. R.

AU - Altepeter, J. B.

AU - Kanter, G. S.

PY - 2013

Y1 - 2013

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AB - We report on a system for the generation and measurement of polarization entangled photons. High speed quantum state tomographies with a raw fidelity of > 91\% with respect to an ideal entangled state are recorded in < 2 seconds, with longer-term accidental-count subtracted fidelities exceeding 99%. Two-photon interference measurements are recorded using an automated alignment and measurement procedure with the signal distributed over 20 km of fiber. These high speed measurement methods are useful for high rate monitoring of entangled states.

KW - Quantum entanglement

KW - optical polarization

KW - optical signal detection

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Fast measurements of entangled photons

Abstract

Keywords

ASJC Scopus subject areas

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