$\begingroup$ 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. $\endgroup$ –

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.

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

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,...

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?

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.

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?

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2023年10月4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.

I have read about and used the MCMT qiskit gate (Multiple Control Multiple Target). But I wonder how they have implemented it, how is a gate (like CCCZ for example) is decopmosed into basic gates and