Research output: Contribution to journal › Article
Entangled states of signal pulses in multimode quantum memory. / Tikhonov, K.S.; Golubeva, T.Y.; Golubev, Y.M.
In: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Vol. 118, No. 5, 2015, p. 773-780.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Entangled states of signal pulses in multimode quantum memory
AU - Tikhonov, K.S.
AU - Golubeva, T.Y.
AU - Golubev, Y.M.
PY - 2015
Y1 - 2015
N2 - © 2015, Pleiades Publishing, Ltd. The possibility of preserving an entangled state of two signal pulses during writing and retrieval processes in a multimode quantum memory is investigated. Two stationary laser sources of light squeezed in two orthogonal quadratures are used for generation of the entangled state. “Carved out” pulses of appropriate duration are mixed on a symmetric beamsplitter, which allows obtaining the desired entanglement. It is assumed that each of the obtained entangled pulses is stored in a separate memory cell and subsequently retrieved from it. The obtained analytical expressions for Duan entanglement criterion are analyzed numerically for the case of broadband memory. It is demonstrated that the entanglement of pulses can be effectively preserved not only in the case of symmetric geometry of the experiment, wherein both pulses are written in two identical independent memory cells, but also in the case of different memory cells and even when one of the cells is absent completely. An i
AB - © 2015, Pleiades Publishing, Ltd. The possibility of preserving an entangled state of two signal pulses during writing and retrieval processes in a multimode quantum memory is investigated. Two stationary laser sources of light squeezed in two orthogonal quadratures are used for generation of the entangled state. “Carved out” pulses of appropriate duration are mixed on a symmetric beamsplitter, which allows obtaining the desired entanglement. It is assumed that each of the obtained entangled pulses is stored in a separate memory cell and subsequently retrieved from it. The obtained analytical expressions for Duan entanglement criterion are analyzed numerically for the case of broadband memory. It is demonstrated that the entanglement of pulses can be effectively preserved not only in the case of symmetric geometry of the experiment, wherein both pulses are written in two identical independent memory cells, but also in the case of different memory cells and even when one of the cells is absent completely. An i
U2 - 10.1134/S0030400X15050264
DO - 10.1134/S0030400X15050264
M3 - Article
VL - 118
SP - 773
EP - 780
JO - OPTICS AND SPECTROSCOPY
JF - OPTICS AND SPECTROSCOPY
SN - 0030-400X
IS - 5
ER -
ID: 3988339