Phase super-resolution using a photonic crystal fibre

Reference:

Kannan, S., Bell, B., Clark, A., Wadsworth, W. J. and Rarity, J. G., 2011. Phase super-resolution using a photonic crystal fibre. In: 2011 Conference on Lasers and Electro-Optics Europe and 12th European Quantum Electronics Conference (CLEO EUROPE/EQEC). Piscataway, NJ: IEEE.

Related documents:

Official URL:

http://dx.doi.org/10.1109/CLEOE.2011.5943464

Abstract

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.

Export

Actions (login required)