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operator_loschmidt_echo_56x1488 Hybrid Monte Carlo Pauli Propagation #204

Description

@FranceGrieco

Name

Hybrid Monte Carlo Pauli Propagation estimate of the OLE signal for operator_loschmidt_echo_56x1488 at sc=0.15

Circuit

operator_loschmidt_echo_56x1488

Observable value

0.1867

Error bound (low)

No response

Error bound (high)

No response

Method

Hybrid Monte Carlo Pauli Propagation

Method proof

The resulting signal with statistical error bars is:
$$

f_{\delta=0.3} = 0.187 \pm 0.006

$$
Hybrid Monte Carlo Pauli Propagation, Heisenberg picture, cache size 500M Pauli terms, minimum absolute coefficient 1e-7, 800 Monte Carlo samples. The OLE signal is reconstructed from the diagonal (P = P') approximation of the commutator moments up to 20th order in the perturbation strength δ.

See Algorithmiq's model description and theory for details and applications.

Please see the attached document for the method proof. This submission reports the Hybrid Monte Carlo Pauli Propagation counterpart at the scattering coefficient sc=0.15. The showcased value is the OLE signal at δ=0.3 (perturbation V_δ = e^{−iδG}, G = Σ_{q∈V_P} X_q), reconstructed from the diagonal approximation of the commutator moments up to 20th order in δ, averaged over 800 Monte Carlo samples.

one-page-summary-hybridMC-56x1488.pdf

Quantum runtime (seconds)

No response

Classical runtime (seconds)

2100000

Compute resources (quantum)

No response

Compute resources (classical)

Intel(R) Xeon(R) Platinum 8168 CPU @ 2.70GHz, 32-vCPU / ~334 GB RAM, 16 nodes in total.

Notes

Average propagation time ≈ 2700 s per Monte Carlo sample, average memory ≈ 94 GB per sample; total CPU time over the 800 samples ≈ 2.1×10⁶ s (samples run in parallel across the cluster).

Authors

No response

Institutions

Algorithmiq, EPFL

Metadata

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Type

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Projects

Status
In review

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