Efficient measurement schemes for bosonic systems
- URL: http://arxiv.org/abs/2210.13585v2
- Date: Thu, 27 Jul 2023 09:06:27 GMT
- Title: Efficient measurement schemes for bosonic systems
- Authors: Tianren Gu, Xiao Yuan, Bujiao Wu
- Abstract summary: Boson is one of the most basic particles and preserves the commutation relation.
We numerically test the schemes for measuring nuclei vibrations simulated using a discrete quantum computer.
- Score: 1.4781921087738965
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Boson is one of the most basic types of particles and preserves the
commutation relation. An efficient way to measure a bosonic system is important
not only for simulating complex physics phenomena of bosons (such as nuclei) on
a qubit based quantum computer, but for extracting classical information from a
quantum simulator/computer that itself is built with bosons (such as a
continuous variable quantum computer). Extending the recently proposed
measurement schemes for qubits, such as shadow tomography and other local
measurement schemes, here we study efficient measurement approaches for bosonic
systems.
We consider truncated qudit and continuous variable systems, corresponding to
simulated bosons on a discrete quantum computer and an inherent boson system,
respectively, and propose different measurement schemes with theoretical
analyses of the variances for these two cases. We numerically test the schemes
for measuring nuclei vibrations simulated using a discrete quantum computer and
a continuous variable Gaussian state, and the simulation results show great
improvement of the performance of the proposed method compared to conventional
ones.
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