Questions tagged [architecture]
For questions related to building of quantum computers and discussion of the hardware aspects.
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What is the logical gate speed of a superconducting quantum computer?
What is the logical gate speed of a photonic quantum computer? says
In a simple world the speed of a photonic quantum computer would just be the speed at which it’s possible to make small (fixed ...
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How can I get the structure of the variational ansatz for VQLS?
I have got a system of linear equations
$$
A|x \rangle = |b\rangle \\
A = 0.45Z_3 + 0.55I \\
|b\rangle = H_1 H_2 H_3
$$
and I would like to solve it for $|x\rangle$.
I am currently trying to ...
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If the main challenges limiting quantum computing's abilities will be passed, will even video games be run on quantum computers?
I'm terribly sorry for my lack of knowledge in (quantum) computer architecture, I still need to learn a lot. But I'd like to know whether quantum computers can execute the same tasks (like running a ...
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Are indistinguishable bosons and fermions computationally equivalent to distinguishable qubits?
From the middle-late decades of the last century, many researchers such as Bennett, Benoif, Deutsch, Feynman, Manin, Wiesner, among others, had some intuition that qubits are computationally more ...
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Are there qudit systems, and why are they not as popular as qubit systems?
Qudit is a $d$-level system that generalizes a qubit. From what I understood qudits are more resource efficient when it comes to spanning the state space. If $N$ is a dimension of a state space, then ...
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The world's first quantum integrated circuit at the atomic scale - How does this advance quantum computing as a whole?
I have a hobbyist/enthusiast understanding of Quantum Computing, having read a few books on the subject. I came across this new article and referenced Nature paper. I know a goal of quantum computing ...
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Gate times for photonic quantum computers
I am trying to understand the landscape of one- and two-qubit gate times for various quantum computing architectures. It is not so hard to find gate times for various gates such as Hadamard, CNOT and ...
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Are there any quantum standards already in development and accessible as draft documents?
Are there any quantum standards already in development and accessible as draft documents?
Any documents describing standardized way of describing and ensuring common meaning/interoperability, like e.g....
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Good review articles on microwave hardware for superconducting qubit quantum computing?
I am trying to find some review articles on the microwave hardware used in superconducting qubit quantum computing.
So far, most papers that I found seem to be high level overviews, e.g., Multilayer ...
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Questions on Definitions and Concepts Regarding Toric Codes
Currently, I reading the toric code section in the beginning of the paper Topological Quantum Memory. Here are a couple of sections that are somewhat confusing to me.
(1)
This quote below is under a ...
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A Particular Way of Erasing Ancilla Qubits
I am currently reading the paper Topological Quantum Memory by Dennis, Kitaev et. al. My main interest is to conceptually understand the idealized assumptions / requirements of a quantum computer ...
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What constitutes a quantum database?
Newb question, I know it's broad. I'm coming here for validated pointers, so I can know what to read. I have QT for CS (Yanofsky, Mannucci) and am reading about Shannon and Von Neumann entropy, but I'...
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What are the pros and cons of the most popular QC architectures?
I notice numerous companies and research groups around the world trying to build QC's with wildly different approaches. Intuitively, this suggests to me that QC is still very early in its maturation - ...
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Usefulness of having a cryogenic controller at 4K for transmons/spin qubits
There have been plenty of papers on the design of cryogenic control chips working at ~4K for qubit control and readout. These papers talk about how running coaxial cables from room temperature control ...
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Can we calculate the quantum volume of a classical computer?
The quantum volume is typically taken as a popular metric to determine the capability of a quantum computer to solve complex problems. Since the end goal is to develop quantum computers that can solve ...
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