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Can someone explain to me how to build a quantum circuit representing the Ising Model? I just want to understand how to represent the Ising Model for the purposes of quantum state label classification.

Craig Gidney
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Enrique Segura
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  • Does this: https://arxiv.org/abs/1807.07112 help? – Victory Omole Apr 21 '19 at 15:38
  • A bit, but still in the dark. – Enrique Segura Apr 21 '19 at 20:42
  • What don't you understand about the paper I linked? – Victory Omole Apr 22 '19 at 04:08
  • For example, if I have a U(\theta), where U is a resulting unitary matrix of a series of unitaries with distinct theta parameters, I want to understand what is the difference between measuring at every wire in the circuit and measure the energy vs measuring the wire of the line-out qubit. And for that matter, why Pauli-Y is important in measuring in the line-out qubit.

    In short: I am trying to understand quantum variation algorithms using Cirq and how to use the problem (Ising model) described as a circuit to find minimal energies?

     – Enrique Segura Apr 22 '19 at 18:49
  • Right now I am still unsure of how exactly I can take a hamiltonian and translate that statement into a circuit. – Enrique Segura Apr 22 '19 at 18:50
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    Which variant of the Ising model are you wanting? one-dimensional transverse Ising model? – DaftWullie Apr 23 '19 at 07:03
  • I am using a 2d lattice with an external field present. – Enrique Segura Apr 27 '19 at 15:22

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