Imaging with quantum states of light
The production of pairs of entangled photons simply by focusing a laser beam onto a crystal
with a nonlinear optical response was used to test quantum mechanics and to open new …
with a nonlinear optical response was used to test quantum mechanics and to open new …
Nonlinear interferometers in quantum optics
MV Chekhova, ZY Ou - Advances in Optics and Photonics, 2016 - opg.optica.org
We review the main works in the field of nonlinear interferometers, which has been
develo** ever since the start of nonlinear optics and has seen growing interest in recent …
develo** ever since the start of nonlinear optics and has seen growing interest in recent …
Quantum metrology with parametric amplifier-based photon correlation interferometers
Conventional interferometers usually utilize beam splitters for wave splitting and
recombination. These interferometers are widely used for precision measurement. Their …
recombination. These interferometers are widely used for precision measurement. Their …
Unconditional and robust quantum metrological advantage beyond n00n states
Quantum metrology employs quantum resources to enhance the measurement sensitivity
beyond that can be achieved classically. While multiphoton entangled N00N states can in …
beyond that can be achieved classically. While multiphoton entangled N00N states can in …
Quantum SU (1, 1) interferometers: Basic principles and applications
ZY Ou, X Li - APL Photonics, 2020 - pubs.aip.org
ABSTRACT A new type of quantum interferometer was recently realized that employs
parametric amplifiers (PAs) as the wave splitting and mixing elements. The quantum …
parametric amplifiers (PAs) as the wave splitting and mixing elements. The quantum …
Detection loss tolerant supersensitive phase measurement with an SU (1, 1) interferometer
In an unseeded SU (1, 1) interferometer composed of two cascaded degenerate parametric
amplifiers, with direct detection at the output, we demonstrate a phase sensitivity overcoming …
amplifiers, with direct detection at the output, we demonstrate a phase sensitivity overcoming …
Experimental generation of multiple quantum correlated beams from hot rubidium vapor
Quantum correlations and entanglement shared among multiple quantum modes are
important for both fundamental science and the future development of quantum …
important for both fundamental science and the future development of quantum …
Effect of losses on the performance of an SU (1, 1) interferometer
We study the effect of losses on the phase sensitivity of the SU (1, 1) interferometer for
different configurations. We find that this type of interferometer is robust against losses that …
different configurations. We find that this type of interferometer is robust against losses that …
Enhancement of the phase-measurement sensitivity beyond the standard quantum limit by a nonlinear interferometer
ZY Ou - Physical Review A—Atomic, Molecular, and Optical …, 2012 - APS
A nonlinear interferometer uses nonlinear elements as beam splitters to split and to
recombine optical waves for interference. As a result, the interference fringe size has a …
recombine optical waves for interference. As a result, the interference fringe size has a …
Pumped-up SU (1, 1) interferometry
Although SU (1, 1) interferometry achieves Heisenberg-limited sensitivities, it suffers from
one major drawback: Only those particles outcoupled from the pump mode contribute to the …
one major drawback: Only those particles outcoupled from the pump mode contribute to the …