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Question 1

1vote

0answers

45views

How to model Molmer-Sorensen gate dynamics accurately with carrier transitions

Sorry if this is the wrong sub, maybe there's one specific for ion traps somewhere?I'm trying to understand the Molmer-Sorensen gate as I want to learn about how pulse shaping is used to make the ...

David

133

askedAug 29 at 14:15

Question 2

1vote

1answer

195views

Noise Models and Decoders for Quantiuum's Trapped Ion

I was a bit confused about what the single and 2 qubit noise models were for quantiuum's trapped ion systems. And if they have a dedicated decoder that's not just a look up table or something.

QuantumSon100

125

askedJun 6 at 1:03

Question 3

1vote

1answer

100views

Unexpected behavior of trapped ion's motional mode (phonon) heating simulation

I'm a novice at qutip simulation.I was recently trying to use qutip to simulate the heating effect of a trapped ion by defining a jump operator defined with heating rate.Below is the code of my ...

Kyungmin Kim

21

askedAug 20, 2024 at 6:02

Question 4

0votes

1answer

119views

Cirac-Zoller CNOT gate implemented by Schmidt-Kaler

I am deriving the Cirac-Zoller CNOT gate as implemented by Schmidt-Kaler following the text of Nakahara & Ohmi's textbook Quantum Computing: From Liner Algebra to Physical Realizations. The gate ...

grav.field

51

askedMay 21, 2024 at 21:32

Question 5

1vote

0answers

39views

Does the Steane code have characteristics which make it especially useful for trapped-ion devices?

On the web page of the Error Correction Zoo for the [[7,1,3]] Steane Code, there are quite a few realizations on trapped-ion devices. In fact, there are a lot of implementations generally compared to ...

vollautomatthi

93

askedMay 20, 2024 at 7:25

Question 6

3votes

1answer

554views

How do I compile a circuit to the native gateset of Quantinuum's trapped-ion devices?

Suppose I have a quantum circuit defined in pytket, qiskit or some other quantum SDK.How do I compile my circuit to be in the native gateset of the Quantinuum trapped ion device/emulators?

Callum

1,260

askedOct 23, 2023 at 16:01

Question 7

1vote

1answer

849views

What is the optimal hardware for quantum computing, and what factors contribute to its preference?

In conventional computing, the use of CMOS (Complementary Metal Oxide Semiconductor) technology as the foundational circuitry for digital logic gates in CPUs has become the industry norm. CMOS's ...

Max

85

askedSep 7, 2023 at 1:13

Question 8

3votes

1answer

324views

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 ...

grav.field

51

askedAug 24, 2023 at 3:07

Question 9

4votes

0answers

329views

What are currently the best reported qubit error rates per gate operation?

Based on some investigation, I have found the best qubit coherence timescales, in superconducting architectures, to be the order of milliseconds.https://journals.aps.org/prb/abstract/10.1103/PhysRevB....

user111

173

askedJan 31, 2023 at 6:48

Question 10

1vote

2answers

118views

Could a “disco ball” be a good geometry for trapped ion quantum computers?

It seems to me that a good geometry for an ion trap quantum computer would be to constrain the ions to lie on the surface of a sphere. Their mutual repulsion would space them out evenly. If the ions ...

user2521987

391

askedOct 18, 2022 at 13:28

Question 11

4votes

1answer

186views

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 ...

Sam Jaques

2,334

askedJul 14, 2022 at 9:36

Question 12

-2votes

1answer

178views

Simultaneous computational basis measurement

Many quantum algorithms requires measurements at the end of the processing and it seems like the quantum state measurement setup is required to be made for measuring the two computational basis.I ...

William

182

askedFeb 18, 2022 at 22:30

Question 13

2votes

2answers

297views

Measurement in the Pauli X basis

A qubit in the state $|1\rangle + |0\rangle$, normalized, is time-dependent, right? So it sweeps around the equator of the Bloch sphere at a frequency proportional to the energy gap according to ...

Anna Naden

721

askedFeb 4, 2022 at 15:50

Question 14

5votes

1answer

230views

Raman scattering goes in all directions, so why doesn't it decohere trapped ions?

I'm trying to learn about the physics of ion traps, and my understanding is that an ion can be moved from a ground state to an excited state by stimulation with a laser pulse. More specifically, this ...

Sam Jaques

2,334

askedDec 7, 2021 at 13:44

Question 15

2votes

1answer

241views

Expanding two rotation operators

I have the following operators acting on two qubits, denoted as $(1)$ and $(2)$:$$T_1=\displaystyle\exp\left(-i\frac{\pi}{4}Z\otimes Z\right)\cdot R_z^{(1)}\left(\frac{\pi}{2}\right)\cdot R_z^{(2)}\...

Oilobobolus

143

askedFeb 28, 2021 at 17:18

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Stack Exchange Network

Questions tagged [trapped-ion]

How to model Molmer-Sorensen gate dynamics accurately with carrier transitions

Noise Models and Decoders for Quantiuum's Trapped Ion

Unexpected behavior of trapped ion's motional mode (phonon) heating simulation

Cirac-Zoller CNOT gate implemented by Schmidt-Kaler

Does the Steane code have characteristics which make it especially useful for trapped-ion devices?

How do I compile a circuit to the native gateset of Quantinuum's trapped-ion devices?

What is the optimal hardware for quantum computing, and what factors contribute to its preference?

Is there any reason to use optical qubits instead of hyperfine qubits?

What are currently the best reported qubit error rates per gate operation?

Could a “disco ball” be a good geometry for trapped ion quantum computers?

High-weight errors from ion trap crosstalk

Simultaneous computational basis measurement

Measurement in the Pauli X basis

Raman scattering goes in all directions, so why doesn't it decohere trapped ions?

Expanding two rotation operators

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