mindquantum.algorithm.nisq.RYLinear

class mindquantum.algorithm.nisq.RYLinear(n_qubits: int, depth: int, prefix: str = '', suffix: str = '')[source]

HEA with RY as single qubit gate and linearly mapped CNOT gate as entanglement gate.

For more information about this ansatz, please refer to Hardware-efficient variational quantum eigensolver for small molecules and quantum magnets.

Parameters

n_qubits (int) – total qubits number of this ansatz.
depth (int) – depth of ansatz.
prefix (str) – prefix of parameters. Default: ''.
suffix (str) – suffix of parameters. Default: ''.

Examples

>>> from mindquantum.algorithm.nisq import RYLinear
>>> RYLinear(3, 2, prefix='a').circuit
      ┏━━━━━━━━━━┓             ┏━━━━━━━━━━┓             ┏━━━━━━━━━━┓
q0: ──┨ RY(a_p0) ┠───■─────────┨ RY(a_p3) ┠───■─────────┨ RY(a_p6) ┠───
      ┗━━━━━━━━━━┛   ┃         ┗━━━━━━━━━━┛   ┃         ┗━━━━━━━━━━┛
      ┏━━━━━━━━━━┓ ┏━┻━┓       ┏━━━━━━━━━━┓ ┏━┻━┓       ┏━━━━━━━━━━┓
q1: ──┨ RY(a_p1) ┠─┨╺╋╸┠───■───┨ RY(a_p4) ┠─┨╺╋╸┠───■───┨ RY(a_p7) ┠───
      ┗━━━━━━━━━━┛ ┗━━━┛   ┃   ┗━━━━━━━━━━┛ ┗━━━┛   ┃   ┗━━━━━━━━━━┛
      ┏━━━━━━━━━━┓       ┏━┻━┓ ┏━━━━━━━━━━┓       ┏━┻━┓ ┏━━━━━━━━━━┓
q2: ──┨ RY(a_p2) ┠───────┨╺╋╸┠─┨ RY(a_p5) ┠───────┨╺╋╸┠─┨ RY(a_p8) ┠───
      ┗━━━━━━━━━━┛       ┗━━━┛ ┗━━━━━━━━━━┛       ┗━━━┛ ┗━━━━━━━━━━┛