A Tailor-made Quantum State Tomography Approach
arXiv:2401.12864 · doi:10.1063/5.0219143
Abstract
Quantum state tomography (QST) aims at reconstructing the state of a quantum system. However in conventional QST the number of measurements scales exponentially with the number of qubits. Here we propose a QST protocol, in which the introduction of a threshold allows one to drastically reduce the number of measurements required for the reconstruction of the state density matrix without compromising the result accuracy. In addition, one can also use the same approach to reconstruct an approximated density matrix depending on the available resources. We experimentally demonstrate this protocol by performing the tomography of states up to 7 qubits. We show that our approach can lead to the same accuracy of QST even when the number of measurements is reduced by more than two orders of magnitudes.
Revised supplementary material, results unchanged; references added
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Cited by in corpus (6)
- Resource-Efficient Cross-Platform Verification with Modular Superconducting Devices
- Experimental verification of Threshold Quantum State Tomography on a fully-reconfigurable photonic integrated circuit
- Adaptive Lattice Gas Algorithm: Classical and Quantum implementations
- Enhanced Compressive Threshold Quantum State Tomography for Qudit Systems
- Unorthodox parallelization for Bayesian quantum state estimation
- Selective and efficient quantum state tomography for multi-qubit systems