TY  - JOUR
AU  - Smith, Devin H.
AU  - Gillett, Geoff
AU  - de Almeida, Marcelo P.
AU  - Branciard, Cyril
AU  - Fedrizzi, Alessandro
AU  - Weinhold, Till J.
AU  - Lita, Adriana
AU  - Calkins, Brice
AU  - Gerrits, Thomas
AU  - Wiseman, Howard M.
AU  - Nam, Sae Woo
AU  - White, Andrew G.
PY  - 2012
DA  - 2012//
TI  - Conclusive quantum steering with superconducting transition-edge sensors
T2  - Nat. Comm.
JO  - Nature Communications
SP  - 6
VL  - 3
IS  - 625
KW  - fromIPMRAS
AB  - Quantum steering allows two parties to verify shared entanglement even if one measurement device is untrusted. A conclusive demonstration of steering through the violation of a steering inequality is of considerable fundamental interest and opens up applications in quantum communication. To date, all experimental tests with single-photon states have relied on post selection, allowing untrusted devices to cheat by hiding unfavourable events in losses. Here we close this 'detection loophole' by combining a highly efficient source of entangled photon pairs with superconducting transition-edge sensors. We achieve an unprecedented ~62% conditional detection efficiency of entangled photons and violate a steering inequality with the minimal number of measurement settings by 48 s.d.s. Our results provide a clear path to practical applications of steering and to a photonic loophole-free Bell test.
N1  - exported from refbase (https://db.rplab.ru/refbase/show.php?record=768), last updated on Sun, 06 May 2012 16:43:34 -0500
ID  - Smith_etal2012
ER  -