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Quantum Zeno Monte Carlo for computing observables

Journal Article · · npj Quantum Information
 [1];  [2];  [1]
  1. Korea Institute for Advanced Study (KIAS), Seoul (Korea, Republic of)
  2. Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
The recent development of logical quantum processors marks a pivotal transition from the noisy intermediate-scale quantum (NISQ) era to the fault-tolerant quantum computing (FTQC) era. These devices have the potential to address classically challenging problems with polynomial computational time using quantum properties. However, they remain susceptible to noise, necessitating noise resilient algorithms. We introduce Quantum Zeno Monte Carlo (QZMC), a classical-quantum hybrid algorithm that demonstrates resilience to device noise and Trotter errors while showing polynomial computational cost for a gapped system. QZMC computes static and dynamic properties without requiring initial state overlap or variational parameters, offering reduced quantum circuit depth.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF)
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357
OSTI ID:
3019747
Journal Information:
npj Quantum Information, Journal Name: npj Quantum Information Journal Issue: 1 Vol. 11; ISSN 2056-6387
Publisher:
Nature Partner JournalsCopyright Statement
Country of Publication:
United States
Language:
English

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