Phase super-resolution using a photonic crystal fibre


Kannan, S., Bell, B., Clark, A., Wadsworth, W. J. and Rarity, J. G., 2011. Phase super-resolution using a photonic crystal fibre. Piscataway, NJ: IEEE.

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Measurement, whilst being physically fundamental, is also fundamentally physical. Classical interferometric measurements suffer from physical limitations where the shot noise limit forms an upper bound of n on a phase shift Δφ that can be resolved, with √n being the average number of photons detected, making their applicability in modern nanoscale experiments quite restricted. Exotic quantum states such as maximally entangled NOON states (|N0≫A;B +|0N≫A;B)/√2, where N is the number of entangled photons are of particular importance as they have repeatedly been shown to exhibit phase super-resolution [1,2]. Interesting post selection schemes [2] and time-reversed detection schemes [3] have been investigated for phase estimation using NOON states. These methods are inherently non-deterministic at the preparation [2] or measurement [3] stage and thus do not optimise resources, for instance the number of photons passing through the sample greatly exceeds those used in the measurement.


Item Type Conference or Workshop Items (UNSPECIFIED)
CreatorsKannan, S., Bell, B., Clark, A., Wadsworth, W. J. and Rarity, J. G.
DepartmentsFaculty of Science > Physics
Research CentresCentre for Photonics and Photonic Materials
ID Code25968
Additional Information2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference, CLEO EUROPE/EQEC 2011. 22-26 May 2011. Munich, Germany.


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