Increase the Efficiency of Post-selection in Direct Measurement of Quantum Wave Function
arXiv:2103.05884 · doi:10.1088/1674-1056/ac1f04
Abstract
Direct weak or strong measurement of quantum wave function has been demonstrated based on the post-selection; however, the efficiency of the measurement is greatly limited by the success probability of the post-selection. Here we propose a modified scheme to directly measure photon's wave function by simply inserting a liquid crystal plate after the coupling between the pointer and wave function. Our modified method can significantly increase the efficiency of the post selection. Numerical simulations demonstrate that our proposal can have a greater efficiency in higher resolution and higher fidelity.
References in corpus (30)
- Many-body quantum state tomography with neural networks
- Ultrasensitive Beam Deflection Measurement via Interferometric Weak Value Amplification
- Direct Measurement of the Quantum Wavefunction
- On mutually unbiased bases
- Colloquium: Understanding Quantum Weak Values: Basics and Applications
- Efficient quantum state tomography
- Quantum state estimation
- Direct measurement of general quantum states using weak measurement
- Direct Measurement of a 27-Dimensional Orbital-Angular-Momentum State Vector
- Full characterisation of polarisation states of light via direct measurement
- Precision frequency measurements with interferometric weak values
- Direct measurement of the density matrix of a quantum system
- Full characterization of a three-photon GHZ state using quantum state tomography
- Compressive Direct Measurement of the Quantum Wave Function
- Observing Dirac's classical phase space analog to the quantum state
- Strong measurements give a better direct measurement of the quantum wave function
- Charge sensing amplification via weak values measurement
- Weak-to-strong transition of quantum measurement in a trapped-ion system
- Practical measurement of joint weak values and their connection to the annihilation operator
- Modular values and weak values of quantum observables
- Experimental demonstration of direct path state characterization by strongly measuring weak values in a matter-wave interferometer
- Direct measurement of a nonlocal entangled quantum state
- Direct Reconstruction of the Quantum Density Matrix by Strong Measurements
- State estimation: direct state measurement vs. tomography
- Quantum optical reconstruction scheme using weak values
- Direct Measurement of the Two-dimensional Spatial Quantum Wavefunction via Strong Measurements
- Optimal Pure-State Qubit Tomography via Sequential Weak Measurements
- Scheme and Experimental Demonstration of Fully Atomic Weak Value Amplification
- -Quench measurement of quantum wavefunction
- Qubit state tomography in superconducting circuit via weak measurements