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A Controlled Phase Gate Between a Single Atom and an Optical Photon

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A Controlled Phase Gate Between a Single Atom and an Optical Photon/ by Andreas Reiserer.
Author:	Reiserer, Andreas.
Description:	XIII, 72 p. 28 illus.online resource. :
Contained By:	Springer Nature eBook
Subject:	Quantum computers. -
Online resource:	https://doi.org/10.1007/978-3-319-26548-3
ISBN:	9783319265483

A Controlled Phase Gate Between a Single Atom and an Optical Photon
Reiserer, Andreas.

A Controlled Phase Gate Between a Single Atom and an Optical Photon[electronic resource] /by Andreas Reiserer. - 1st ed. 2016. - XIII, 72 p. 28 illus.online resource. - Springer Theses, Recognizing Outstanding Ph.D. Research,2190-5053. - Springer Theses, Recognizing Outstanding Ph.D. Research,.

Introduction -- Controlling the Position and Motion of a Single Atom in an Optical Cavity -- Measurement and Control of the Internal Atomic State -- Controlled Phase Gate Mechanism -- Nondestructive Detection of an Optical Photon -- A Quantum Gate Between a Flying Optical Photon and a Single Trapped Atom -- Summary and Outlook.

This thesis reports on major steps towards the realization of scalable quantum networks. It addresses the experimental implementation of a deterministic interaction mechanism between flying optical photons and a single trapped atom. In particular, it demonstrates the nondestructive detection of an optical photon. To this end, single rubidium atoms are trapped in a three-dimensional optical lattice at the center of an optical cavity in the strong coupling regime. Full control over the atomic state — its position, its motion, and its electronic state — is achieved with laser beams applied along the resonator and from the side. When faint laser pulses are reflected from the resonator, the combined atom-photon state acquires a state-dependent phase shift. In a first series of experiments, this is employed to nondestructively detect optical photons by measuring the atomic state after the reflection process. Then, quantum bits are encoded in the polarization of the laser pulse and in the Zeeman state of the atom. The state-dependent phase shift mediates a deterministic universal quantum gate between the atom and one or two successively reflected photons, which is used to generate entangled atom-photon, atom-photon-photon, and photon-photon states out of separable input states.

ISBN: 9783319265483

Standard No.: 10.1007/978-3-319-26548-3doiSubjects--Topical Terms:

564139
Quantum computers.

LC Class. No.: QA76.889

Dewey Class. No.: 621.3

A Controlled Phase Gate Between a Single Atom and an Optical Photon
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520 $a This thesis reports on major steps towards the realization of scalable quantum networks. It addresses the experimental implementation of a deterministic interaction mechanism between flying optical photons and a single trapped atom. In particular, it demonstrates the nondestructive detection of an optical photon. To this end, single rubidium atoms are trapped in a three-dimensional optical lattice at the center of an optical cavity in the strong coupling regime. Full control over the atomic state — its position, its motion, and its electronic state — is achieved with laser beams applied along the resonator and from the side. When faint laser pulses are reflected from the resonator, the combined atom-photon state acquires a state-dependent phase shift. In a first series of experiments, this is employed to nondestructively detect optical photons by measuring the atomic state after the reflection process. Then, quantum bits are encoded in the polarization of the laser pulse and in the Zeeman state of the atom. The state-dependent phase shift mediates a deterministic universal quantum gate between the atom and one or two successively reflected photons, which is used to generate entangled atom-photon, atom-photon-photon, and photon-photon states out of separable input states.
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