Calculating spin correlations with a quantum computer

Brody, Jed; Guzman, Gavin

doi:10.1119/10.0001967

Cited by 2 publications

(2 citation statements)

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“…To scale up the number experimental trials and systematically scan through experimental parameters, we used the Qiskit interface, which allows users to program quantum circuits in Python [17]. The code for interfacing with the quantum computers was adapted from existing examples utilizing IBM Quantum Experience [1,3,17]. The code used for all experiments in this paper is available online [18].…”

Section: Implementing On a Quantum Computermentioning

confidence: 99%

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Modeling Quantum Enhanced Sensing on a Quantum Computer

Tran¹,

Narong²,

Cooper³

2022

Preprint

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Quantum computers allow for direct simulation of the quantum interference and entanglement used in modern interferometry experiments with applications ranging from biological sensing to gravitational wave detection. Inspired by recent developments in quantum sensing at the Laser Interferometer Gravitational-wave Observatory (LIGO), here we present two quantum circuit models that demonstrate the role of quantum mechanics and entanglement in modern precision sensors. We implemented these quantum circuits on IBM quantum processors, using a single qubit to represent independent photons traveling through the LIGO interferometer and two entangled qubits to illustrate the improved sensitivity that LIGO has achieved by using non-classical states of light. The one-qubit interferometer illustrates how projection noise in the measurement of independent photons corresponds to phase sensitivity at the standard quantum limit. In the presence of technical noise on a real quantum computer, this interferometer achieves the sensitivity of 11% above the standard quantum limit. The two-qubit interferometer demonstrates how entanglement circumvents the limits imposed by the quantum shot noise, achieving the phase sensitivity 17% below the standard quantum limit. These experiments illustrate the role that quantum mechanics plays in setting new records for precision measurements on platforms like LIGO. The experiments are broadly accessible, remotely executable activities that are well suited for introducing undergraduate students to quantum computation, error propagation, and quantum sensing on real quantum hardware.

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Section: Implementing On a Quantum Computermentioning

confidence: 99%

“…On the way to more advanced research goals, first generation quantum computers also serve as educational tools. The IBM Quantum Experience, for example, is an online quantum computing platform that provides the opportunity for students to interact with real quantum hardware [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%