
How to construct a multi-qubit controlled-Z from elementary gates?
$\begingroup$ You would feed it into the next CCCZ, but drop the first two operations in the the second CCCZ's circuit. Those operations are preparing it into a T state, which is what the final state of the discarded qubit is. So the second CCCZ would have 2 fewer operations. $\endgroup$ –
qiskit - How do I draw a multi control cz gate or do I have to make …
2022年9月12日 · Another option would be to log into your IBMQ account and access the Composer. There the drag and drop interface allows you to add additional controls with drag and drop or a right click.
How to design Multi qubit Controlled Z rotations
2021年8月19日 · I need some help in multi-qubit controlled -Z rotation. Below is the qiskit code of triple controlled z rotation def cccZ(): qc = QuantumCircuit(4) qc.cp(pi/4,...
circuit construction - Are there low T-count measurement and …
2023年6月8日 · Obviously, outside of the CNOT+T gate set, there are some examples (e.g the 6 T gate construction of CCCZ). Also we can generalize the CCZ construction by applying a change of basis using a CNOT circuit, or by stacking it in various ways. But are there any other truly 'different' (for some definition of different) examples?
Automatic compilation of quantum circuits
A recent question here asked how to compile the 4-qubit gate CCCZ (controlled-controlled-controlled-Z) into simple 1-qubit and 2-qubit gates, and the only answer given so far requires 63 gates! The
Given a $|W_8\\rangle$, perform a CCCZ using stabilizer operations
2021年12月5日 · This state has enough "bells and whistles" on top of the basic $|CCCZ\rangle$ state that you can perform the corrective CCZs that result from the CCCZ teleportation. And also it's possible to turn a $|W_{8}\rangle$ state into this state using only stabilizer operations.
Does control and target matter in the CZ (Controlled-Z) Gate?
2021年5月27日 · IBM Quantum Experience and other Algorithm Creators generally draw the CZ gates like this: Does it not matter which qubit is the control and which is the target? If so why?
are multi-qubit controlled Z gates (CZ,CCZ,CCZ,...) symmetric
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Is there a way to develop a multiple controlled X or Z gate on …
2019年10月8日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Cosmetic appearances of multi-controlled Z gate in MCMT Qiskit
from qiskit.circuit.library import MCMT c3z = MCMT('z', num_ctrl_qubits=3, num_target_qubits=1) #define the 3-controlled z gate a.k.a. cccz gate c3z.decompose().draw(output='mpl') upon running the code you see the decomposed c3z gate: if you append this gate to a quantum circuit,