Detection of two-mode spatial quantum states of light by electro-optic integrated directional couplers
arXiv:2004.05059 · doi:10.1364/JOSAB.32.001165
Abstract
We study both manipulation and detection of two-mode spatial quantum states of light by means of a reconfigurable integrated device built in an electro-optical material in a Kolgelnik-Schmidt configuration, which provides higher error tolerance to fabrication defects and larger integration density than other current schemes. SU(2) transformations are implemented on guided spatial modes in such a way that reconstruction of both the optical field-strength quantum probability distribution, via spatial two-mode homodyne detection, and the full optical field-strength wavefunction, by means of weak values, are carried out. This approach can easily be extended to spatial N-mode input quantum states. Apart from its usefulness to characterize optical quantum states, it is also emphasized its application to the measurement of the so-called generalized quantum polarization.
arXiv comment10 pages, 8 figures
References in corpus (20)
- Quantum information with continuous variables
- Photonic quantum technologies
- Continuous-variable optical quantum state tomography
- Silica-on-Silicon Waveguide Quantum Circuits
- Direct Measurement of the Quantum Wavefunction
- Broadband waveguide quantum memory for entangled photons
- On-chip quantum interference between silicon photon-pair sources
- Manipulating multi-photon entanglement in waveguide quantum circuits
- Complex weak values in quantum measurement
- Generating, manipulating and measuring entanglement and mixture with a reconfigurable photonic circuit
- Quantum teleportation on a photonic chip
- Phase-controlled integrated photonic quantum circuits
- Gallium Arsenide (GaAs) Quantum Photonic Waveguide Circuits
- Fast path and polarisation manipulation of telecom wavelength single photons in lithium niobate waveguide devices
- Quantum interference and manipulation of entanglement in silicon wire waveguide quantum circuits
- A quantum relay chip based on telecommunication integrated optics technology
- Quantum optical reconstruction scheme using weak values
- Multi-mode density matrices of light via amplitude and phase control
- Strain-optic active control for quantum integrated photonics
- Reconciling quantum trajectories and stationary quantum distributions in single-photon polarization states