Questions tagged [resource-request]

For questions that involve a request for resources to learn anything related to quantum computing or quantum information.

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Implementing error correction (from physical qubit point of view)

I have worked with physical qubits, and I am fairly familiar with gates and sequences from initialisation to readout. I don't know much about error correction, and I love to learn how error correction ...
Rex's user avatar
  • 23
1 vote
1 answer
60 views

Are there sources of noise in qubits for which the fundamental origin is unknown?

I am looking for examples of sources of noise in qubits for which the fundamental origin is unknown. I.e. we see experimentally that the qubits are noisy, but we do not really understand why they are &...
Marco Fellous-Asiani's user avatar
-1 votes
0 answers
74 views

Cite sources for development of hardware and software for quantum computers

I have written a paper on Quantum K map and my professor has asked me as the next step to cite sources from creditable science journals on the issue of hardware and software development for quantum ...
Root Groves's user avatar
1 vote
1 answer
37 views

Are there resources to learn about quantum optics that focus on math and/or are addressed to those familiar with the qubit formalism?

Most of my knowledge in the field of Quantum Information comes from the lectures I've had as an MSc Student and from Nielsen and Chuang's textbook. Both of these focused on the "qubit" ...
Tristan Nemoz's user avatar
3 votes
0 answers
48 views

Open Source Quantum Algorithm Development projects

Is there a platform where people contribute together to solving tasks in the area of quantum algorithm development?
Lazloo Xp's user avatar
  • 131
2 votes
1 answer
58 views

Quantum Encryption Schemes

With the introduction of quantum computing and realizing it capabilities through Shor's algorithm and other advancements, cryptographers shifted their focus on post-quantum cryptography, where they ...
Josh's user avatar
  • 387
4 votes
1 answer
60 views

Construction of 3D Toric Code

I am currently trying to find a mathematically elegant way to describe the construction of a 3D toric code. Since most literature is on 2D toric codes I was looking there for potential clues on how to ...
Oli's user avatar
  • 41
2 votes
1 answer
104 views

Explicit examples of non-stabilizer (non-additive) quantum codes with recovery procedure

I am looking for resources that give an explicit example of a non-stabilizer code along with an explicit recovery procedure, i.e., syndrome measurement followed by correction operation for that code. ...
FDGod's user avatar
  • 1,739
1 vote
0 answers
24 views

Who is currently working on coherent Ising machines (classical analog devices)?

Can you share some papers on that subject? Review papers would be highly appreciated. What are limitations in terms of connectivity between different spins?
sycramore's user avatar
  • 325
3 votes
1 answer
116 views

Decoding algorithms for qLDPC codes

Is there any open source decoding algorithm implementation for qLDPC codes under circuit-based noise model? From the paper arXiv:2308.07915, I know that it is possible to adapt BP-OSD to circuit-based ...
Unknown's user avatar
  • 53
1 vote
0 answers
65 views

Quantum circuits with only $\{CNOT, H\}$

The Clifford circuit contains $\{CNOT, H, S\}$. I wonder, is there any paper that studied the quantum circuit only with $\{CNOT, H\}$? What's the name of this gate set?
劉承瀚's user avatar
1 vote
0 answers
52 views

Generalization of representing SU(2) as quaternions

I am familiar with the isomorphism between $SU(2)$ and the unit quaternions, and the group homomorphism from them to $SO(3)$. I am interested in knowing if there is a generalization for $SU(2^n)$. My ...
Chris Henson's user avatar
3 votes
0 answers
48 views

I would like to know the textbook/paper on hamiltonian for rf-SQUID

I am a graduate student in the Department of Computer Engineering, and I am currently doing research on superconducting quantum computers. In particular, I am focusing on quantum annealing machines ...
Aki's user avatar
  • 31
4 votes
1 answer
197 views

Resources to study superconducting quantum hardware for beginners

I want to start studying quantum hardware, in particular I'm interested on superconducting qubit. Are there any valid resources for a beginner (notes, lecture...)? I'm an electronic engineer and I ...
Simona99's user avatar
  • 180
2 votes
0 answers
34 views

Derivation of energy gap formula for adiabatic Grover algorithm

I am having a difficulty in finding the full derivation for local search energy gap, as described in In the adiabatic version of Grover's algorithm, how is the Hamiltonian constructed?. I looked ...
Paulske's user avatar
  • 457
2 votes
0 answers
26 views

Recent references establishing connections between stabilizer error correction and entanglement distillation procedures

I know some concrete entanglement distillation protocols (from this review). I also know there are connections between error-correction codes and entanglement distillation (again this review but also ...
Marco Fellous-Asiani's user avatar
2 votes
1 answer
77 views

How to combine measurement of each term in Hamiltonian $H = aH_1 + bH_2$ to get final results?

I have a Hamiltonian $$H = aH_1 + bH_2\,,\tag{1}$$ with $a$ and $b$ being coefficients, and I want to apply each term/evolution separately, then recombine the measurement results to get the result for ...
Moustafa's user avatar
2 votes
1 answer
168 views

What is the relation between maximally entangled and maximally mixed?

In Wikipedia I read the following: "A multipartite state ${\displaystyle |\psi \rangle }$ of a system is called absolutely maximally entangled if for any bipartition ${\displaystyle A|B} $ of ${...
reza's user avatar
  • 463
2 votes
1 answer
71 views

Quantum algorithm for AES?

We all know about Shor's algorithm to attack RSA but what is the state of the art for attacking symetric algorithm such as AES today with quantum computers ? What are the most promising papers on this ...
Duen's user avatar
  • 326
1 vote
0 answers
135 views

Do solutions to the exercises in Preskill's lecture notes exist anywhere?

I'm teaching myself quantum computing and would like to know if solutions to the exercises in Preskill's lecture notes exist anywhere. It's quite hard to see if my approach is correct because I don't ...
requiemman's user avatar
1 vote
0 answers
43 views

Why EfficientSU2 in QGAN

In Qiskit's QGAN example, the parameterised quantum circuit to be trained is the EfficientSU2. I have not found any citation there on the choice of this circuit, and the only justification is that it ...
Wolfman Jack's user avatar
3 votes
1 answer
96 views

References for quantum state praparation: what states are easy to prepare and which ones aren’t?

I’m looking for references on quantum state preparation. I know there’s a plethora of papers on this topic but I don’t know how to narrow it down or figure out which ones to prioritize. In general, I’...
BQPcomplete's user avatar
2 votes
1 answer
65 views

A Toffoli gate can be decomposed into a circuit of 1- and 2-qubit gates

While reseaching a way to implement a 3 qubit Toffoli gate, I came across this circuit: However, I cannot find a proper source for this circuit. Can anyone link a cited paper.
PhysicsQuestion's user avatar
1 vote
1 answer
85 views

What is complete structures of the photonic quantum computers?

I am interested in studying quantum computers based on photonic integrated circuits. I am looking for a site, article, book, or material that will introduce the process of its implementation step by ...
Saber's user avatar
  • 11
0 votes
0 answers
31 views

The possibility of a Quantum image classifier

I want to create an exhaustive database of all possible contour images(B&W) with their image tags, for a given resolution. By classifying every single image possible for the resolution, I want to ...
LithiumPoisoning's user avatar
2 votes
1 answer
66 views

Classical capacity of the quantum bitflip channel

I'm looking for references or a derivation for the classical capacity of the quantum bitflip channel, $$\mathcal{N}(\rho) = (1-p)\rho + pX\rho X.$$ Or if this is not known, are some other quantities ...
forky40's user avatar
  • 6,358
0 votes
0 answers
19 views

What are the quantum algorithms available for Monte Carlo sampling?

What are the quantum algorithms available for performing Monte Carlo sampling. Is there any implementation of these algorithms. Any kind of resources would be helpful
Rag's user avatar
  • 31
0 votes
0 answers
17 views

Online resource to troubleshoot issues with my personal project

I am currently working on my own quantum conventional neural network as a project to enhance my learning. However, I have reached a dead end where my code was successfully working, but after ...
PhysicsQuestion's user avatar
12 votes
1 answer
678 views

How are quantum algorithms devised?

This is a soft question, but I find it to be a very pertinent one... Algorithms for Grover's search and Simon's problems seem to come completely out of the blue, and I find it very hard to understand ...
Alan Whitteaker's user avatar
2 votes
3 answers
73 views

References for homology, suitable as background for quantum codes

Quantum codes are often related to the concepts in homology, such as chain complexes. Is there an introduction to homology suitable for building a strong understanding of these results? I am looking ...
Abdullah Khalid's user avatar
7 votes
1 answer
323 views

What are reviews on the search for good quantum LDPC codes?

Can anyone provide a link for an up-to-date review of the current situation in researching good quantum LDPC codes and prospects? I am interested in questions like: Does the quantum computing ...
Yaron Jarach's user avatar
2 votes
1 answer
271 views

Diamond norm distances between some channel and the identity

I'm currently working with the continuity result by Kretschmann-Schlingemann-Werner (arXiv version) for Stinespring isometries (more precisely, the following corollary to their result, cf. Appendix C ...
Frederik vom Ende's user avatar
0 votes
1 answer
56 views

Is there any recent review on the state of the art of NMR quantum computing?

Is there any recent review on the state of the art NMR quantum computing? there are some reviews but they are not complete. for example does not give the data for the gate times and so on.
P.A.M's user avatar
  • 121
2 votes
0 answers
36 views

Exploiting virtual-$Z_{\theta}$ corrections in QEC

The work done by IBM Researchers to perform virtual-$Z_{\theta}$ gates allowed them to: achieving zero-time relative phase shifts; correcting $Z_{\phi}$ errors occurring when applying some gates -- e....
Daniele Cuomo's user avatar
1 vote
0 answers
16 views

Is the LOCC-assisted quantum channel capacity of a degradable quantum channel additive?

The LOCC-assisted quantum channel capacity refers to the maximum rate of faithful quantum information transmission through the channel when classical communications and local operations are also ...
Josu Etxezarreta Martinez's user avatar
2 votes
2 answers
143 views

what is square root of a density matrix power two?

I know that in algebra for a variable we have $ \sqrt {x^2} = |x|$ What if $x$ is a density matrix? Please share resource for your answer.
reza's user avatar
  • 463
1 vote
2 answers
194 views

Where can I find tutorials on quantum variational algorithms?

I am interested in learning about quantum algorithms, especially quantum variational algorithms. I would like to know where I can find resources that delve into specific quantum variational algorithms ...
rexy london's user avatar
1 vote
1 answer
101 views

Proofs that lattice surgery does what it claims to do

I'm interested in making a little list of papers that include a proof that lattice surgery really does what it claims to do; namely, performs a pairwise logical measurement. The original paper (http://...
Yossarian's user avatar
  • 113
0 votes
1 answer
19 views

Is there a polynomial time mapping from 'Grover States' to an orthonormal set of vectors

Grover's algorithm solves the problem of 'Quantum Search' which I will describe below: Given some oracle, $O_f$, such that $O_f | x \rangle = (-1)^{f(x)} | x \rangle$, find a value of $x$ such that $...
Andrew Baker's user avatar
4 votes
0 answers
66 views

What are good pedagogical introductions to entanglement distillation?

I have a basic understanding of what entanglement distillation entails, up to the typical subspace projection protocol described in Nielsen & Chuang, and I would like to read more on the subject. ...
Bentanglement's user avatar
2 votes
1 answer
75 views

What is known about the 'structure' of the solution for Graph Isomorphism on quantum computers?

It is thought that Graph Isomorphism, at least the HSP with the symmetric group, is unsolvable on quantum computers. This is a case of the non-abelian HSP. But if a solution to this problem were to ...
Andrew Baker's user avatar
5 votes
1 answer
103 views

Recent experimental demonstrations of variational quantum algorithms?

I am interested in the recent experimental demonstrations of variational quantum algorithms. Can someone please provide me with a list of references of recent experimental demonstrations of ...
Soumik Adhikary's user avatar
0 votes
1 answer
86 views

Portfolio optimization via quantum Zeno dynamics in Qiskit

Recently, I came across paper Portfolio Optimization via Quantum Zeno Dynamics on a Quantum Processor. In the paper, a new approach to optimization with QAOA is introduced. Instead of employing a ...
Martin Vesely's user avatar
1 vote
0 answers
40 views

Is there an interactive coding platform for learning quantum computing (like DataCamp, but for quantum computing)?

Is there an interactive coding platform for learning quantum computing (like DataCamp, but for quantum computing)? With DataCamp, after each new concept, it gives you a window with incomplete code for ...
user3146's user avatar
  • 129
3 votes
1 answer
183 views

Quantum and DNA computing

Recently I came across the article Associative Quantum Memory. In the article, the authors discussed early physical implementation of quantum computers with NMR. In particular, NMR implementation used ...
Martin Vesely's user avatar
3 votes
2 answers
109 views

How could compiler optimisations be used with fault-tolerant quantum circuits?

It is fairly well known that in a NISQ context you can often boost the fidelity of your quantum circuit by reducing the gate count and depth of your circuit. For example you can use the KAK ...
Callum's user avatar
  • 883
2 votes
1 answer
138 views

Detailed references on Quantum Principal Component Analysis

I am looking for review articles and other online resources on qPCA based on Lloyd's original proposal. I have found the original source to be slightly hand-wavy with the details so I am having ...
Song of Physics's user avatar
4 votes
2 answers
163 views

Threshold estimate for 7-qubit code with flag-qubit syndrome extraction

I am looking for a paper where the threshold for 7-qubit code having a syndrome extraction based on flag qubits has been done. In the original paper about flag qubits, there is an estimation of pseudo-...
Marco Fellous-Asiani's user avatar
1 vote
0 answers
17 views

analyze entanglement of a multipartite state via its reduced two-qubit states

I want resources about entanglement of multipartite states where the author analyzes entanglement of all possible reduced two-qubit states for that. for example suppose the below state $$|w\rangle = a|...
reza's user avatar
  • 463
2 votes
0 answers
25 views

Is there any error correction experimental set-up based on stationary-flying hybrid systems?

In a former question of mine I asked to detail the functioning of a photonic based set-up encoding a quantum state within a Shor code. I would like to be updated on the eventual existence of any ...
Daniele Cuomo's user avatar

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