Arbitrarily High Super-Resolving Phase Measurements at Telecommunication Wavelengths

Abstract

We present two experiments that achieve phase super-resolution at telecommunication wavelengths. One of the experiments is realized in the space domain and the other in the time domain. Both experiments show high visibilities and are performed with standard lasers and single-photon detectors. The first experiment uses six-photon coincidences, whereas the latter needs no coincidence measurements, is easy to perform, and achieves, in principle, arbitrarily high phase super-resolution. Here, we demonstrate a 30-fold increase of the resolution. We stress that neither entanglement nor joint detection is needed in these experiments, demonstrating that neither is necessary to achieve phase super-resolution.

5 pages, 7 figures

References in corpus (10)

• Quantum-enhanced measurements: beating the standard quantum limit
• Quantum Interferometric Optical Lithography: Exploiting Entanglement to Beat The Diffraction Limit
• The maximum speed of dynamical evolution
• Super-resolving phase measurements with a multi-photon entangled state
• Beating the Standard Quantum Limit with Four Entangled Photons
• Entanglement-free Heisenberg-limited phase estimation
• De Broglie Wavelength of a Nonlocal Four-Photon
• A Quantum Rosetta Stone for Interferometry
• Time-reversal and super-resolving phase measurements
• Beating the standard quantum limit: Phase super-sensitivity of N-photon interferometers

Cited by in corpus (6)

• Tutorial: Optical quantum metrology
• Observing optical coherence across Fock layers with weak-field homodyne detectors
• Deterministic Super Resolution with Coherent States at the Shot Noise Limit
• Time-reversed two-photon interferometry for phase super-resolution
• Synthesis of arbitrary, two-mode, high visibility N-photon interference patterns
• Generation of N00N-like interferences with two thermal light sources