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Generation of Optical Coherent State Superpositions by Number-Resolved Photon Subtraction from Squeezed Vacuum

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arxiv 1004.2727 v4 pith:JNM2FDIH submitted 2010-04-15 quant-ph

Thomas Gerrits , Scott Glancy , Tracy S. Clement , Brice Calkins , Adriana E. Lita , Aaron J. Miller , Alan L. Migdall , Sae Woo Nam
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Richard P. Mirin Emanuel Knill
This is my paper
classification quant-ph
keywords photonscoherentcsssphotonphoton-number-resolvingsqueezedstatesubtracting
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We have created heralded coherent state superpositions (CSS), by subtracting up to three photons from a pulse of squeezed vacuum light. To produce such CSSs at a sufficient rate, we used our high-efficiency photon-number-resolving transition edge sensor to detect the subtracted photons. This is the first experiment enabled by and utilizing the full photon-number-resolving capabilities of this detector. The CSS produced by three-photon subtraction had a mean photon number of 2.75 -0.24/+0.06 and a fidelity of 0.59 -0.14/+0.04 with an ideal CSS. This confirms that subtracting more photons results in higher-amplitude CSSs.

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