2010
DOI: 10.1103/physreva.81.053829
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Low-light-level cross-phase modulation by quantum interference

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Cited by 42 publications
(37 citation statements)
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“…This effect plays a key role in modern quantum optics experiments and applications, such as enhanced nonlinear susceptibility [2], optical switch [3], slow and fast lights [4], quantum memory [5][6][7], quantum interference [8] and vibrational cooling [9]. Recently, the study of the EIT has been extended to multi-channels, e.g., the double EIT [10,11], and focused on simulation of other physical phenomena, including Anderson localization [12] and quasi-charged particles [13].…”
Section: Introductionmentioning
confidence: 99%
“…This effect plays a key role in modern quantum optics experiments and applications, such as enhanced nonlinear susceptibility [2], optical switch [3], slow and fast lights [4], quantum memory [5][6][7], quantum interference [8] and vibrational cooling [9]. Recently, the study of the EIT has been extended to multi-channels, e.g., the double EIT [10,11], and focused on simulation of other physical phenomena, including Anderson localization [12] and quasi-charged particles [13].…”
Section: Introductionmentioning
confidence: 99%
“…Although these interactions have been shown to preserve coherence [15][16][17] , they are generally performed using strong fields [18][19][20] . It is only recently that parametric effects such as cross-phase modulation 21,22 and spontaneous downconversion 23,24 have been observed with a single-photon level pump. We take the next step and realize a photon-photon interaction, which can enable some fascinating experiments.…”
mentioning
confidence: 99%
“…In our scheme the control field not only induces transparency for the quantum probe pulse, but simultaneously imparts on the latter a phase shift at the level of few photons via the Kerr-type nonlinear interaction between the two fields. This is fundamentally different from most studies of cross-phase shifts of quantum light, which are based on N -type EIT medium [15,[24][25][26][27], where the Kerr interaction between the signal and probe fields is mediated by a strong classical field. The measurement of the phase shift induced by the control field on the single-photon probe pulse provides nondestructive detection of the number of control photons, thus enabling the quantum nondemolition measurement of the photon number [28] in the control beam.…”
Section: Discussionmentioning
confidence: 93%