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Quantum Simulation of Molecular Collisions with Superconducting Qubits · Around

2010

Quantum Simulation of Molecular Collisions with Superconducting Qubits

Pritchett, Emily J., Benjamin, Colin, Galiautdinov, Andrei et al.

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We introduce a protocol for the fast simulation of $n$-dimensional quantum systems on $n$-qubit quantum computers with tunable couplings.

A mapping is given between the control parameters of the quantum computer and the matrix elements of $H_{\rm s}(t)$, an arbitrary, real, time-dependent $n\times n$ dimensional Hamiltonian that is simulated in the $n$-dimensional `single excitation' subspace of the quantum computer.
A time-dependent energy/time rescaling minimizes the simulation time on hardware having a fixed coherence time.
We demonstrate how three tunably coupled phase qubits simulate a three-channel molecular collision using this protocol, then study the simulation's fidelity as a function of total simulation time.

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