Error-compensation measurements on polarization qubits
arXiv:1503.00263 · doi:10.1364/JOSAB.33.001256
Abstract
Systematic errors are inevitable in most measurements performed in real life because of imperfect measurement devices. Reducing systematic errors is crucial to ensuring the accuracy and reliability of measurement results. To this end, delicate error-compensation design is often necessary in addition to device calibration to reduce the dependence of the systematic error on the imperfection of the devices. The art of error-compensation design is well appreciated in nuclear magnetic resonance system by using composite pulses. In contrast, there are few works on reducing systematic errors in quantum optical systems. Here we propose an error-compensation design to reduce the systematic error in projective measurements on a polarization qubit. It can reduce the systematic error to the second order of the phase errors of both the half-wave plate (HWP) and the quarter-wave plate (QWP) as well as the angle error of the HWP. This technique is then applied to experiments on quantum state tomography on polarization qubits, leading to a 20-fold reduction in the systematic error. Our study may find applications in high-precision tasks in polarization optics and quantum optics.
8 pages, 3 figures
References in corpus (10)
- Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
- Entanglement-free Heisenberg-limited phase estimation
- Quantum control and process tomography of a semiconductor quantum dot hybrid qubit
- Arbitrarily accurate composite pulses
- Robust and versatile black-box certification of quantum devices
- Experimental Adaptive Quantum Tomography of Two-Qubit States
- Achieving quantum precision limit in adaptive qubit state tomography
- Broadband composite polarization rotator
- Realization of mutually unbiased bases for a qubit with only one wave plate: Theory and experiment
- Variable Ultra-broadband and Narrowband Composite Polarization Retarders
Cited by in corpus (10)
- Gate Set Tomography
- Recursively Adaptive Quantum State Tomography: Theory and Two-qubit Experiment
- Control-enhanced sequential scheme for general quantum parameter estimation at the Heisenberg limit
- Achieving quantum precision limit in adaptive qubit state tomography
- Experimental realization of self-guided quantum process tomography
- Quantum tomography of noisy ion-based qudits
- Precise tomography of optical polarization qubits under conditions of chromatic aberration of quantum transformations
- Efficient Experimental Verification of Quantum Gates with Local Operations
- Quantum Advantage: A Single Qubit's Experimental Edge in Classical Data Storage
- Experimental Masking of Real Quantum States