Trapped ion quantum computing is one proposed approach to a large-scale quantum computing. Ions, or charged atomic particles, can be confined and suspended in free space using electromagnetic fields. Qubits are stored in stable electronic states of each ion, and quantum information can be transferred through the collective quantized motion of the ions in a shared trap (interacting through the Coulomb force).
Questions tagged [ion-trap-quantum-computing]
22 questions
15
votes
3 answers
Scalability of ion trap quantum computers
My understanding is that the magnetic fields needed to hold the ions in place in ion trap quantum computers are very complex, and for that reason, currently, only 1-D computers are possible, therefore reducing the ease of communication between…
auden
- 3,489
- 1
- 21
- 50
12
votes
1 answer
What kinds of ions do trapped ion quantum computers use?
Trapped ion quantum computers are among the most promising approaches to achieve large-scale quantum computation.
The general idea is to encode the qubits into the electronic states of each ion, and then control the ions via electromagnetic…
glS
- 27,510
- 7
- 37
- 125
8
votes
1 answer
What are the main obstacles to overcome to build silicon-photonic quantum computers?
In superconducting quantum computers, we use mostly superconducting qubits or trapped ions. However, those systems are quite large because their environment either requires near absolute zero temperature (for superconducting to happen), or vacuum…
Aleksandar Kostovic
- 347
- 1
- 5
7
votes
1 answer
Is there a classical limit to quantum computing?
Why are quantum computers scalable?
With the subjects of spontaneous collapse models and decoherence in mind, it seems to me that the scalability of quantum computers is something which is not only physically difficult to achieve but also…
Jake Xuereb
- 466
- 2
- 7
4
votes
1 answer
Resource Estimation for Ion Trap Architecture
Most resource estimation papers (computing physical qubit count, algorithm run time, power consumption, etc.) target the superconducting qubit architecture. Some examples include
How to factor 2048 bit RSA integers in 8 hours using 20 million noisy…
quantum123
- 41
- 4
4
votes
1 answer
High-weight errors from ion trap crosstalk
A basic assumption of various error correction threshold theorems is that the probability of an error exponentially decreases with the weight of the error.
One of the selling features of ion traps is that in a single trap, the qubits have all-to-all…
Sam Jaques
- 2,201
- 7
- 15
4
votes
0 answers
Ion trap computational basis measurement
I'm studying the ion trap quantum computation and I'm wondering if a certain computational basis measurement, for example $|0\rangle$ state measurement, is possible in ion trap.
The fig.3 and 4 in the paper,…
William
- 182
- 9
4
votes
2 answers
Modular exponentiation quantum circuit design for Shor's algorithm
I'm studying Shor's algorithm and I'm wondering how to build the quantum circuit for the modular exponentiation calculation in the Shor's algorithm.
Is the circuit found classically (using conventional computers) by checking the truth table of the…
William
- 182
- 9
4
votes
0 answers
Why is it important to perform optical quantum computing with ONLY linear components?
The main achievement of the KLM protocol is demonstrating that quantum computing can be done with only linear optical elements, i.e., beam splitters, phase shifters, single-photon sources, and photo-detectors. I wonder why it is important to…
LearnerAL
- 81
- 3
4
votes
1 answer
What is the elementary gate set for ion-trap quantum computers?
I asked earlier Which quantum gates can we use in terms of depth?. In the question, I asked
I want to measure the depth of a circuit, but I do not know which quantum gates should be used when the circuit is decomposed.
and the answers…
sotowa
- 131
- 1
- 4
3
votes
0 answers
Spin precession using a laser
According to Christopher Monroe: "Modular Ion Trap Quantum Networks: Going Big", the hyperfine states of the valence electron in the Yb+ is used as a qubit. I know that we can change the spin orientation of this electron by using precession by…
Tech Solver
- 613
- 4
- 10
3
votes
1 answer
Is there any reason to use optical qubits instead of hyperfine qubits?
In trapped ion quantum computing, while optical qubits have an energy difference of hundreds of THz, hyperfine qubits operate in the microwave regime ($1\sim 10$ THz). Due to this reason, hyperfine qubits have longer lifetimes (thinking in terms of…
grav.field
- 51
- 6
2
votes
1 answer
(When) must the ground state of a frustrated Hamiltonian be entangled?
I've only recently, and still only haphazardly and rather poorly, begun to understand Ising models with local interactions. I'm interested in particular in the simple one-dimensional Ising model with nearest and next-nearest neighbor interactions,…
Mark Spinelli
- 15,378
- 3
- 26
- 83
2
votes
1 answer
Does Stim support the Mølmer–Sørensen gate?
The Mølmer–Sørensen gate is a common ion trap gate. Does Stim support it? I tried MS 0 1 but it didn't work.
Craig Gidney
- 44,299
- 1
- 41
- 116
2
votes
1 answer
Comparing technical limitations of major quantum computing approaches
As far as I know, major quantum computing approaches include superconducting qubits, trapped ions, nuclear magnetic resonance qubits, and free space quantum optics. I guess two main technical difficulties in this field are creating entanglement and…
LearnerAL
- 81
- 3