Complete quantum control of orbital qubits by phase-controlled stimulated Raman transitions
- URL: http://arxiv.org/abs/2403.15295v1
- Date: Fri, 22 Mar 2024 15:40:59 GMT
- Title: Complete quantum control of orbital qubits by phase-controlled stimulated Raman transitions
- Authors: Jun-Yong Yan, Liang Zhai, Hans-Georg Babin, Yuanzhen Li, Si-Hui Pei, Moritz Cygorek, Wei Fang, Fei Gao, Andreas D. Wieck, Arne Ludwig, Chao-Yuan Jin, Da-Wei Wang, Feng Liu,
- Abstract summary: We demonstrate complete control of hole orbital states in a quantum dot.
This is enabled by successfully inducing stimulated Raman transitions within $Lambda$ systems connected via radiative Auger transitions.
Our results establish the orbital states in solid-state quantum emitters as a potentially viable resource for applications in quantum information processing and quantum communication.
- Score: 18.591036146528445
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Complete quantum control of a stationary quantum bit embedded in a quantum emitter is crucial for photonic quantum information technologies. Recently, the orbital degree of freedom in optically active semiconductor quantum dots emerged as a promising candidate. However, the crucial ability to perform arbitrary rotation on orbital qubits remains elusive. Here, we demonstrate complete control of hole orbital states in a quantum dot. This is enabled by successfully inducing stimulated Raman transitions within $\Lambda$ systems connected via radiative Auger transitions. This new capability allows manipulations of polar and azimuth angles of the Bloch vector, as evidenced by Rabi oscillations and Ramsey interference, respectively. Simultaneous control of both parameters is achieved by concurrently varying the amplitude and phase of picosecond Raman pulses, enabling arbitrary unitary rotation of the Bloch vector. Our results establish the orbital states in solid-state quantum emitters as a potentially viable resource for applications in quantum information processing and quantum communication.
Related papers
- Enhanced quantum state transfer: Circumventing quantum chaotic behavior [35.74056021340496]
We show how to transfer few-particle quantum states in a two-dimensional quantum network.
Our approach paves the way to short-distance quantum communication for connecting distributed quantum processors or registers.
arXiv Detail & Related papers (2024-02-01T19:00:03Z) - Hole Flying Qubits in Quantum Dot Arrays [1.0446041735532203]
We show that electric field manipulation allows dynamical control of the SOI, enabling simultaneously the implementation of quantum gates during the transfer.
We employ dynamical decoupling schemes to focus and preserve the spin state, leading to higher transfer fidelity.
arXiv Detail & Related papers (2023-12-07T19:00:02Z) - A vertical gate-defined double quantum dot in a strained germanium
double quantum well [48.7576911714538]
Gate-defined quantum dots in silicon-germanium heterostructures have become a compelling platform for quantum computation and simulation.
We demonstrate the operation of a gate-defined vertical double quantum dot in a strained germanium double quantum well.
We discuss challenges and opportunities and outline potential applications in quantum computing and quantum simulation.
arXiv Detail & Related papers (2023-05-23T13:42:36Z) - Quantum process tomography of continuous-variable gates using coherent
states [49.299443295581064]
We demonstrate the use of coherent-state quantum process tomography (csQPT) for a bosonic-mode superconducting circuit.
We show results for this method by characterizing a logical quantum gate constructed using displacement and SNAP operations on an encoded qubit.
arXiv Detail & Related papers (2023-03-02T18:08:08Z) - Coherent control of a high-orbital hole in a semiconductor quantum dot [21.05348937863074]
coherent manipulation of single charge carriers in quantum dots is limited mainly to their lowest orbital states.
We demonstrate an all-optical method to control high-orbital states of a hole via stimulated Auger process.
Our work opens new possibilities for understanding the fundamental properties of high-orbital states in quantum emitters.
arXiv Detail & Related papers (2022-12-21T03:49:46Z) - Entanglement catalysis for quantum states and noisy channels [41.94295877935867]
We investigate properties of entanglement and its role for quantum communication.
For transformations between bipartite pure states, we prove the existence of a universal catalyst.
We further develop methods to estimate the number of singlets which can be established via a noisy quantum channel.
arXiv Detail & Related papers (2022-02-10T18:36:25Z) - Revealing higher-order light and matter energy exchanges using quantum
trajectories in ultrastrong coupling [0.0]
We extend the formalism of quantum trajectories to open quantum systems with ultrastrong coupling.
We analyze the impact of the chosen unravelling (i.e., how one collects the output field of the system) for the quantum trajectories.
arXiv Detail & Related papers (2021-07-19T11:22:12Z) - Information Scrambling in Computationally Complex Quantum Circuits [56.22772134614514]
We experimentally investigate the dynamics of quantum scrambling on a 53-qubit quantum processor.
We show that while operator spreading is captured by an efficient classical model, operator entanglement requires exponentially scaled computational resources to simulate.
arXiv Detail & Related papers (2021-01-21T22:18:49Z) - Quantum Phases of Matter on a 256-Atom Programmable Quantum Simulator [41.74498230885008]
We demonstrate a programmable quantum simulator based on deterministically prepared two-dimensional arrays of neutral atoms.
We benchmark the system by creating and characterizing high-fidelity antiferromagnetically ordered states.
We then create and study several new quantum phases that arise from the interplay between interactions and coherent laser excitation.
arXiv Detail & Related papers (2020-12-22T19:00:04Z) - Adiabatic quantum state transfer in a semiconductor quantum-dot spin
chain [0.0]
We present evidence of adiabatic quantum-state transfer in semiconductor quantum-dot electron spins.
Based on simulations, we estimate that the probability to correctly transfer single-spin eigenstates and two-spin singlet states can exceed 0.95.
arXiv Detail & Related papers (2020-07-08T03:01:27Z) - Programmable two-qubit gates in capacitively coupled flopping-mode spin
qubits [0.0]
We show a versatile set of quantum gates between adjacent spin qubits defined in semiconductor quantum dots.
We calculate the estimated infidelity of different two-qubit gates in the most immediate possible experimental realizations.
arXiv Detail & Related papers (2020-03-04T15:37:21Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.