mindquantum.algorithm.nisq.RYCascade

Contents

mindquantum.algorithm.nisq.RYCascade#

class mindquantum.algorithm.nisq.RYCascade(n_qubits: int, depth: int, prefix: str = '', suffix: str = '')#

HEA with RY as single qubit gate and two layers of linearly mapped CNOT gate as entangle gate.

../../../_images/RYCascade.png

For more information about this ansatz, please refer to Challenges in the Use of Quantum Computing Hardware-Efficient Ansätze in Electronic Structure Theory.

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 RYCascade
>>> RYCascade(3, 1, 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) ┠───
      ┗━━━━━━━━━━┛       ┗━━━┛ ┗━━━━━━━━━━┛ ┗━━━┛       ┗━━━━━━━━━━┛
Contents