Tag: circuit-construction

36 How do I add 1+1 using a quantum computer? 2018-04-09T18:37:41.830

32 How is the oracle in Grover's search algorithm implemented? 2018-03-17T02:26:32.157

22 Why is it important to eliminate the garbage qubits? 2018-03-18T02:05:19.633

20 How can I build a circuit to generate an equal superposition of 3 outcomes for 2 qubits? 2018-06-12T09:48:37.680

14 Given a decomposition for a unitary $U$, how do you decompose the corresponding controlled unitary gate $C(U)$? 2018-03-26T15:37:09.230

14 Do multi-qubit measurements make a difference in quantum circuits? 2018-04-04T10:49:17.640

14 Circuit construction for Hamiltonian simulation 2019-02-27T16:34:09.700

14 How many two-qubit gates are required to implement a general N-qubit unitary? 2019-06-18T09:22:35.527

13 What is the quantum circuit equivalent of a (delayed choice) quantum eraser? 2018-04-02T14:39:19.600

13 Automatic compilation of quantum circuits 2018-08-24T18:05:02.970

12 Jones Polynomial 2018-06-11T07:07:03.777

12 How to calculate circuit depth properly? 2019-03-25T20:39:25.970

11 What is a "barrier" in Qiskit circuits? 2019-09-30T17:10:29.583

10 What do double wires mean in quantum circuits, and how do they relate to if statements? 2018-03-31T13:47:03.780

10 What would be the simplest addition that would make the D-Wave architecture universal? 2018-04-11T09:30:04.060

10 Simulating Clifford + few-T circuits 2018-04-17T01:17:41.923

10 Shortest sequence of universal quantum gates that correspond to a given unitary 2018-05-13T14:09:15.530

10 Simplification of "rotation swapping" circuit 2020-05-14T19:49:19.580

9 How to program a controlled Hadamard-Hadamard gate? 2019-06-13T03:19:25.203

9 How to create quantum circuits from scratch 2019-07-22T13:17:36.957

8 Why do we need a Classical Register for carrying out Quantum Computations? 2018-08-19T08:44:02.790

8 Understanding the Group Leaders Optimization Algorithm 2018-10-17T17:25:00.750

8 How to prevent future loops using a control qubit? 2018-10-27T15:25:20.867

8 Is there any method of adding two operators in a circuit? 2019-01-30T13:21:55.213

8 How is it possible to implement unitary operator when its size is exponential in inputs? 2019-04-23T01:06:17.220

8 Preparing any superposition of fixed Hamming weight states 2020-08-11T14:23:56.073

8 Consequences of $MIP^\ast=RE$ Regarding Quantum Algorithms 2020-08-16T16:30:01.993

7 How exactly does Simon's algorithm solve the Simon's problem? 2018-04-15T06:45:54.140

7 How to avoid error when applying certain combinations of degree of freedom rotations using a quantum circuit? 2018-05-19T10:26:28.080

7 SWAP gate(s) in the $R(\lambda^{-1})$ step of the HHL circuit for $4\times 4$ systems 2018-07-12T21:32:29.900

7 Topological Circuit Simulator 2018-07-16T06:00:49.633

7 Minimum number of CNOTs for Toffoli with non-adjacent controls 2018-08-07T05:35:22.910

7 Generalization for $n$ quantum teleportations 2018-09-09T01:17:57.037

7 Decomposition of arbitrary 2 qubit operator 2018-09-15T04:07:41.233

7 Is there a general method to implement a 'greater than' quantum circuit? 2018-10-05T11:03:34.360

7 $R_z$ gate representations 2018-10-11T23:50:19.760

7 What's an example of building a circuit $U_f$ that implements a simple function $f$? 2018-10-18T19:25:59.780

7 Is it better to use fewer gates or fewer working qubits? 2018-11-07T13:06:51.703

7 Most efficient way for general state generation 2019-05-26T19:45:49.610

7 Summation of amplitudes 2019-06-08T18:40:24.817

7 Simulating a 3-local Hamiltonian Term 2019-06-14T04:50:34.120

7 Is there a simple, formulaic way to construct a modular exponentiation circuit? 2019-07-22T17:15:37.977

7 How to transform e.g., a 4 by 4 unitary matrix into a quantum circuit 2019-12-18T15:47:58.477

7 Decomposing a $(w+1)$-qubit permutation gate into $w$-qubit permutation gates, SWAPs and NOTs 2020-01-01T18:26:48.753

7 Why is Deutsch's gate universal? 2020-03-17T19:30:48.713

7 How to do quantum circuit arithmetic? 2020-06-05T13:28:38.197

7 Shor's algorithm: initialization of second register 2020-11-17T16:54:42.150

7 Is there an efficient circuit implementing the unitary $U|x\rangle|0\rangle=|x\rangle\Big(\sqrt{1 - x/2^n}\,|0\rangle+\sqrt{x/2^n}|1\rangle\Big)?$ 2021-01-11T14:18:43.473

6 How exactly is the stated composite state of the two registers being produced using the $R_{zz}$ controlled rotations? 2018-07-01T17:07:49.533

6 What is the smallest quantum circuit to produce two-qubit state (a,b,b,b)? 2018-08-27T13:54:31.473

6 Correspondence between the Topological model and Quantum Circuit model 2018-12-30T18:56:38.720

6 Status of software packages for quantum compiling 2019-01-09T20:19:45.323

6 How to construct a quantum circuit (QIP system) for the graph non-isomorphism problem? 2019-01-23T11:58:33.063

6 Summing states of two qubit registers 2019-03-25T17:08:33.790

6 Quantum circuit for computing fidelity 2019-05-02T06:01:38.453

6 Sequential circuit using quantum gates 2019-06-11T20:47:29.127

6 Implementation of filter operation 2019-08-06T10:59:57.667

6 How to prepare mixed states on a quantum computer? 2020-02-13T15:28:48.693

6 How to approximate $Rx$, $Ry$ and $Rz$ gates? 2020-05-05T10:21:25.380

6 Decomposing gates resembling exponentiated members of desired gateset 2020-12-04T19:11:50.827

6 Trying to understand this measurement of a simple quantum circuit 2020-12-10T01:53:07.100

6 Distinguishing collapsed and uncertain qubit in a quantum circuit 2021-01-18T06:06:13.027

5 Implementation of quantum adder 2018-06-29T11:43:38.203

5 Error: Simulation of "Quantum algorithm for linear systems of equations" for $4\times 4$ systems on Quirk (without SWAP) - Global phase 2018-07-14T23:03:21.847

5 Showing the equivalence of two simple {NOT, CNOT} circuits 2018-07-15T19:51:49.450

5 How to re-create the following circuit image? 2018-08-21T16:17:27.053

5 Classical XOR gate in Quantum Circuit 2018-09-04T06:00:37.903

5 How to create a condition on only one classical bit when we have a total of 2 classic bits in the system 2018-09-20T10:32:45.643

5 Fault tolerant quantum measurement: how is implemented the "majority vote" 2018-10-04T06:08:50.777

5 Mapping Algebraic Normal Form of Exclusive Sum of Products to Toffoli Network 2018-11-04T23:26:18.383

5 Reversible computation without inverting the circuit 2018-11-11T09:14:51.817

5 Implementation of inverse QFT? 2018-12-05T21:57:07.493

5 How to build a quantum circuit representing the Ising Model? 2019-04-19T18:55:50.223

5 How to encode MNIST data set on a quantum circuit to study supervised learning with QNN? 2019-05-24T05:11:32.660

5 Quantum Fourier Transform without SWAPs 2019-06-10T21:00:34.877

5 Can anybody explain or suggest a good reference on how to make a modular exponentiation circuit for N=15 with any coprime base? 2019-06-11T21:19:05.397

5 Coding an oracle for Simon's algorithm 2019-06-25T11:36:23.723

5 A basic question on circuits and matrix representation 2019-07-31T18:21:44.750

5 Developing quantum circuits for specific quantum chemistry configurations 2019-10-17T14:20:24.183

5 Trying to build a circuit for quantum teleportation on IBMQ I get ERROR_RUNNING_JOB error 2019-11-05T12:42:46.517

5 Can a Toffoli gate be implemented using Fredkin gates? 2019-12-27T14:35:39.600

5 Uncomputation in quantum implementation of a classical algorithm 2020-01-04T15:39:05.720

5 How to implement the CCH gate in quantum computers available in clouds? 2020-01-05T09:38:42.050

5 Stabilizer circuit synthesis via Clifford gates 2020-01-14T16:25:59.833

5 Aproximating unitaries with elements from a t-design 2020-03-05T18:58:13.930

5 How to make circuit for n-control Z gate( i.e $C^3Z$ )? 2020-05-09T19:06:00.247

5 Procedures and intuition for designing simple quantum circuits? 2020-06-12T15:48:38.343

5 Representation of rotation operators $e^{-i\theta(I-Z_1\otimes Z_2 \otimes Z_3)}$ about arbitrary axis for $3$ qubits 2020-06-20T23:14:21.420

5 Equivalence checking of quantum circuits up to error 2020-07-16T08:08:39.267

5 Can anyone provide me with an example of the for Grover's algorithm on one qubit? 2020-08-13T03:34:53.440

5 Reducing the depth of quantum circuits with ancilla qubits 2020-09-17T10:54:16.190

5 Are there any algorithms that take measurements in an intermediate step? 2020-12-31T17:13:02.470

5 How to create the state $\vert 0 \rangle+i \vert 1 \rangle$ using elementary gates? 2021-01-18T16:15:06.850

4 How are two different registers being used as "control"? 2018-06-27T22:13:57.977

4 How to analyze highly entangled quantum circuits? 2018-11-22T20:49:23.440

4 How to get all combinations of given input? 2018-12-06T16:19:22.763

4 Problem with approximating adiabatic evolution with quantum circuit 2018-12-23T16:59:21.160

4 Constructing a circuit which performs the transformation $|x,y\rangle \to |x, x + y \bmod 4\rangle$ 2019-02-11T18:37:37.540

4 Garbage-Free Reversible Binary-To-Unary Decoder Construction 2019-02-19T17:56:50.523