Photon sorters and QND detectors using single photon emitters

TY - JOUR

T1 - Photon sorters and QND detectors using single photon emitters

AU - Witthaut, Dirk

AU - Lukin, M.D.

AU - Sørensen, Anders Søndberg

PY - 2012/3/6

Y1 - 2012/3/6

N2 - We discuss a new method for realizing number-resolving and non-demolition photo detectors by strong coupling of light to individual single photon emitters, which act as strong optical non-linearities. As a specific application we show how these elements can be integrated into an error-proof Bell state analyzer, whose efficiency exceeds the best possible performance with linear optics even for a modest atom-field coupling. The methods are error-proof in the sense that every detection event unambiguously projects the photon state onto a Fock or Bell state and imperfections only result in reduced success probability, not in wrong results.

AB - We discuss a new method for realizing number-resolving and non-demolition photo detectors by strong coupling of light to individual single photon emitters, which act as strong optical non-linearities. As a specific application we show how these elements can be integrated into an error-proof Bell state analyzer, whose efficiency exceeds the best possible performance with linear optics even for a modest atom-field coupling. The methods are error-proof in the sense that every detection event unambiguously projects the photon state onto a Fock or Bell state and imperfections only result in reduced success probability, not in wrong results.

U2 - 10.1209/0295-5075/97/50007

DO - 10.1209/0295-5075/97/50007

M3 - Journal article

SN - 0295-5075

VL - 97

SP - 50007

JO - Lettere Al Nuovo Cimento

JF - Lettere Al Nuovo Cimento

IS - 5

ER -