Tag: tensor-product

28 How do I show that a two-qubit state is an entangled state? 2018-06-07T23:14:06.640

9 How to keep track of entanglements when emulating quantum computation? 2018-04-28T09:40:25.543

8 Is there an algorithm for determining if a given vector is separable or entangled? 2019-10-01T23:59:36.167

7 Symmetry of tensor product w.r.t. Vazirani 2-qubit video 2018-03-25T01:02:30.473

7 Confusion regarding projection operator 2018-06-09T10:00:22.750

7 Why is the state of multiple qubits given by their tensor product? 2018-11-18T12:13:01.487

7 Composing the CNOT gate as a tensor product of two level matrices 2019-02-07T13:49:02.157

7 How to interpret $-\rvert1\rangle \otimes \rvert1\rangle = -\rvert11\rangle$? 2019-05-30T09:33:54.660

6 Partial trace over a product of matrices - one factor is in tensor product form 2018-12-25T08:15:27.197

6 Prove that $\|p^{\otimes n} - q^{\otimes n}\| \leq n \|p-q\|$ for density operators $p,q$ 2019-10-27T19:00:37.650

5 What is the $\left| 22\right>$ state? 2018-06-11T10:28:40.287

5 Simplifying Quantum Tensor products with coefficients 2018-08-14T20:22:19.970

5 Bell state preparation 2020-09-17T16:42:16.347

5 Can every bipartite state be written as $\rho_{AB} = \sum_{ij} c_{ij}\sigma_A^i\otimes \omega_B^j$? 2020-10-20T00:21:33.593

5 Stinespring dilation: Size of environment 2020-12-10T19:20:42.570

4 What do we mean by the notation $\lvert \mathbf{x}, 0\rangle$? 2018-04-26T09:23:24.410

4 How to calculate tensor product for the magic square 2018-08-29T09:27:53.127

4 What role does the non-commutativity of the tensor product play in experimental quantum computation? 2018-11-05T12:23:21.877

4 How to factor the output of a CNOT acting on the input $|-,+\rangle$ 2019-09-09T05:08:01.983

4 How should I interpret $|2\rangle|3\rangle$? 2019-12-01T09:25:34.527

4 How to obtain the tensor-product of two quantum operations (superoperators) explicitly? 2019-12-04T04:01:38.077

4 Is the tensor product of two states commutative? 2020-06-23T09:59:51.103

4 Quantum tensor product closer to Kronecker product? 2020-10-05T15:54:56.633

4 Are the two ways of interpreting the expression $(|a\rangle\otimes|b\rangle)(\langle c|\otimes\langle d|)(|e\rangle\otimes |f\rangle)$ equivalent? 2021-02-08T21:52:07.797

3 Tensor product properties used to obtain Kraus operator decomposition of a channel 2018-06-01T20:40:29.040

3 How is the joint state of these qubits derived? 2018-07-08T15:10:25.443

3 Confusion over tensor products in sympy.physics.quantum.qubit (in Python) 2018-09-17T22:17:37.173

3 What circuit or operation corresponds to the tensor product? 2018-11-15T18:02:57.907

3 Clock matrix vs matrix clock 2018-12-17T23:44:23.927

3 Quantum Toffoli gate equation 2019-04-12T13:16:32.290

3 Notation for two qubit composite product state 2019-04-14T20:26:01.587

3 Writing the notation when gates act on non successive registers 2019-05-28T10:11:23.647

3 Which representation describes the composite Hilbert space? 2019-07-19T17:59:55.740

3 Quantum Principal Component analysis by Seth Lloyd 2020-01-15T22:28:21.057

3 What is a local operator? 2020-03-20T12:57:49.553

3 Show that a $CZ$ gate can be implemented using a $CNOT$ gate and Hadamard gates 2020-06-13T11:54:43.447

3 Simulate Hamiltonians with Pauli operations (controlled time evolution) 2020-11-11T23:44:54.610

3 Show that the two circuits are equivalent mathematically 2020-12-30T01:32:29.290

2 Tensor product between operators 2018-09-08T09:12:56.557

2 Proof of no-cloning 2018-12-13T15:02:03.383

2 What is the tensorial representation of the quantum swap gate? 2019-04-24T08:02:20.937

2 Writing the transformation matrix for the following in terms of Kronecker products of elementary 2-qubit gates 2019-04-29T07:16:55.513

2 How do I write a tensor product of conditional gates in matrix form? 2019-06-11T21:50:52.787

2 Kronecker product and multiplication operation on qubit states 2019-06-20T05:33:09.383

2 Derive one equation from the other 2019-07-23T06:28:56.597

2 Understanding the action of operators on vectors in tensor product spaces 2019-10-02T02:55:01.050

2 Is kronecker product identifiable? 2020-03-11T15:56:11.550

2 2 qubit gate operation on multi qubit systems 2020-03-14T18:28:02.173

2 What does the notation $U(B,\beta) = \prod_{j =1}^n e^{-i \beta \sigma_j^x} $ mean in the context of QAOA? 2020-04-03T13:00:24.627

2 Is there a good way to mathematically write a CNOT operation over non-neighboring qubits in a circuit? 2020-08-18T15:39:09.233

2 Discrepancy in inner product between tensor products 2020-11-28T21:20:34.320

2 How do I represent my 3-qubit state in the computational basis? 2021-02-22T21:36:01.937

2 Is the order of the tensor product in $|\phi\rangle\otimes|\chi\rangle=|\chi\rangle\otimes|\phi\rangle$ relevant? 2021-02-24T22:38:17.297

1 Proof that $2^n \times 2^n$ operator be decomposed in terms of $2 \times 2$ operators 2019-01-31T16:51:08.513

1 Better Way Of Separating Two CQ-States 2019-02-07T01:02:15.270

1 Kronecker notation of an operator 2019-05-27T17:32:32.543

1 Clarification of bra-ket notation 2019-10-28T04:15:15.657

1 IBM quantum circuit - order of tensor product for equivalent matrix 2020-04-21T01:01:33.750

1 Composition of tensor product 2020-04-27T20:07:14.343

1 How do I compute the output of quantum circuit involving multiple gates? 2020-04-28T14:56:00.890

1 Changing the Basis 2020-08-25T20:35:36.073

1 Trace distance of two classical-quantum state with hashing 2020-11-05T07:45:21.747

1 Does $\mathrm{tr}(A \otimes B) = \mathrm{tr} (A) \otimes \mathrm{tr}(B)$ hold for partial trace? 2021-02-20T19:25:08.977

0 The correct set of measurement operators on a mutiple qubit system 2019-08-08T17:54:50.187

0 Tensor Product in Q# 2020-05-20T12:53:22.593

0 Generic maths for two-qubit gates 2020-05-21T14:26:36.337

0 Grover oracle result: vectors (0,1) & (0,1) => two Hadamards => product of two H results => CZ = (.5, .-5, -.5, -.5) 2020-06-05T19:17:55.203