Mode locking of electron spin coherences in singly charged quantum dots

A. Greilich; D. R. Yakovlev; A. Shabaev; Al. L. Efros; I. A. Yugova; R. Oulton; V. Stavarache; D. Reuter; A. Wieck; M. Bayer

doi:10.1126/science.1128215

Mode locking of electron spin coherences in singly charged quantum dots

A. Greilich
, D. R. Yakovlev
, A. Shabaev
, Al. L. Efros
, I. A. Yugova
, R. Oulton
, V. Stavarache
, D. Reuter
, A. Wieck
, M. Bayer

Research output: Contribution to journal › Article (Academic Journal) › peer-review

419 Citations (Scopus)

Abstract

The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged ( In, Ga) As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.

Original language	English
Pages (from-to)	341-345
Number of pages	5
Journal	Science
Volume	313
Issue number	5785
DOIs	https://doi.org/10.1126/science.1128215
Publication status	Published - 21 Jul 2006

Research Groups and Themes

Photonics and Quantum

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title = "Mode locking of electron spin coherences in singly charged quantum dots",

abstract = "The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged ( In, Ga) As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.",

author = "A. Greilich and Yakovlev, \{D. R.\} and A. Shabaev and Efros, \{Al. L.\} and Yugova, \{I. A.\} and R. Oulton and V. Stavarache and D. Reuter and A. Wieck and M. Bayer",

year = "2006",

month = jul,

day = "21",

doi = "10.1126/science.1128215",

language = "English",

volume = "313",

pages = "341--345",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

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TY - JOUR

T1 - Mode locking of electron spin coherences in singly charged quantum dots

AU - Greilich, A.

AU - Yakovlev, D. R.

AU - Shabaev, A.

AU - Efros, Al. L.

AU - Yugova, I. A.

AU - Oulton, R.

AU - Stavarache, V.

AU - Reuter, D.

AU - Wieck, A.

AU - Bayer, M.

PY - 2006/7/21

Y1 - 2006/7/21

N2 - The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged ( In, Ga) As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.

AB - The fast dephasing of electron spins in an ensemble of quantum dots is detrimental for applications in quantum information processing. We show here that dephasing can be overcome by using a periodic train of light pulses to synchronize the phases of the precessing spins, and we demonstrate this effect in an ensemble of singly charged ( In, Ga) As/GaAs quantum dots. This mode locking leads to constructive interference of contributions to Faraday rotation and presents potential applications based on robust quantum coherence within an ensemble of dots.

U2 - 10.1126/science.1128215

DO - 10.1126/science.1128215

M3 - Article (Academic Journal)

SN - 0036-8075

VL - 313

SP - 341

EP - 345

JO - Science

JF - Science

IS - 5785

ER -

Mode locking of electron spin coherences in singly charged quantum dots

Abstract

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