Experimental demonstration of full-field quantum optical coherence tomography

Abstract

We present, to the best of our knowledge, the first implementation of full-field quantum optical coherence tomography (FF-QOCT). In our system, we are able to obtain full three-dimensional (3D) information about the internal structure of a sample under study by relying on transversely resolved Hong–Ou–Mandel (HOM) interferometry with the help of an intensified CCD (ICCD) camera. Our system requires a single axial scan, obtaining full-field transverse single-photon intensity in coincidence with the detection of the sibling photon for each value of the signal-idler temporal delay. We believe that this capability constitutes a significant step forward toward the implementation of QOCT as a practical biomedical imaging technique.

Spectrally resolved Hong–Ou–Mandel interferometry for quantum-optical coherence tomography

“…However, variations on OCT include full-domain OCT (whose quantum version appears on Ref. [18]), swept-source OCT [32], and spectral-domain OCT (SD-OCT) [33]. The latter uses a spectrometer to analyze the resulting interference pattern as a function of wavelength while the reference arm is stationary.…”

“…A Michelson version of QOCT has been shown to represent a functional and robust configuration, which can benefit from the incorporation of novel photon-number-resolving detectors [15], and which is amenable to miniaturization [16,17]. A recent full-field QOCT implementation has been demonstrated using an intensified CCD camera [18]. This method, akin to full-field OCT, reduces considerably the time required for probing a three-dimensional object by eliminating the need for raster scanning the transverse section of the sample.…”

Entangled Photon-Pair Sources based on three-wave mixing in bulk crystals

“…Entanglement distribution and QKD -high rate Compact, robust and movable, high count rate sources Single-crystal sources BBO [263,284,360], Sagnac sources [108,115,303,305], Crossedcrystal sources [62,97], Beam displacer sources [361] Satellite entanglement distribution and QKD Compact, very high count rate and mechanically stable sources Parallel-crystal sources [302], Sagnac sources [108,109,290] Teleportation/Swapping Spectrally separable biphoton states, group-velocity matching Review article [362], BBO (or BiBO) sources [363], BBO (BiBO) source with PBS [283,285,364] which also works well at telecom [255], QPM crystal source at telecom wavelengths [365], Sagnac source with group velocity match at telecom [366], Sagnac sources [291] Multi-photon entanglement Generate multiple photon-pairs with high count rates, heralded photons for multi-photon interference Crossed-crystal sources [367], Cascaded SPDC sources of triplets [3,368], multi-SPDC interference [367,369] based on BBO with PBS [364] HOM interference, Optical coherence tomography, Quantum sensing, metrology and imaging High count rate sources, spectrally factorizable Review articles [237][238][239][240]309], Single-crystal sources [351,370], Group velocity matched crystals [254,…”

Self-referenced hologram of a single photon beam

“…The two-dimensional spatial phase profile of a single photon [1,2,3] is an important resource for free-space quantum optical communication [4,5,6,7,8,9,10,11], quantum computing [12,13], quantum imaging [14,15,16,17,18,19,20,21] and quantum metrology [22,23,24]. Unfortunately, the complete characterization of the twodimensional spatial structure of a single photon is a challenging task due to its entirely indeterminate global phase [25,26].…”