Preserving multi-level quantum coherence by dynamical decoupling
- URL: http://arxiv.org/abs/2203.00852v1
- Date: Wed, 2 Mar 2022 03:56:13 GMT
- Title: Preserving multi-level quantum coherence by dynamical decoupling
- Authors: Xinxing Yuan, Yue Li, Mengxiang Zhang, Chang Liu, Mingdong Zhu, Xi
Qin, Nikolay V. Vitanov, Yiheng Lin, and Jiangfeng Du
- Abstract summary: We experimentally apply dynamical decoupling to protect superpositions with three levels of a trapped $9rmBe+$ ion from noisy magnetic field.
Our demonstration, straightforwardly scalable to more levels, may open up a path toward long coherence quantum memory, metrology and information processing with qudits.
- Score: 13.376636715994948
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Quantum information processing with multi-level systems (qudits) provides
additional features and applications than the two-level systems. However,
qudits are more prone to dephasing and dynamical decoupling for qudits has
never been experimentally demonstrated. Here, as a proof-of-principle
demonstration, we experimentally apply dynamical decoupling to protect
superpositions with three levels of a trapped $^9\rm{Be}^+$ ion from ambient
noisy magnetic field, prolonging coherence by up to approximately an order of
magnitude. Our demonstration, straightforwardly scalable to more levels, may
open up a path toward long coherence quantum memory, metrology and information
processing with qudits.
Related papers
- Visualizing Dynamics of Charges and Strings in (2+1)D Lattice Gauge Theories [103.95523007319937]
We study the dynamics of local excitations in a lattice of superconducting qubits.
For confined excitations, the magnetic field induces a tension in the string connecting them.
Our method allows us to experimentally image string dynamics in a (2+1)D LGT.
arXiv Detail & Related papers (2024-09-25T17:59:05Z) - Continuous dynamical decoupling of optical $^{171}$Yb$^{+}$ qudits with
radiofrequency fields [45.04975285107723]
We experimentally achieve a gain in the efficiency of realizing quantum algorithms with qudits.
Our results are a step towards the realization of qudit-based algorithms using trapped ions.
arXiv Detail & Related papers (2023-05-10T11:52:12Z) - High-fidelity dimer excitations using quantum hardware [1.3977204802483425]
We simulate the dynamics of a quantum spin dimer, the basic quantum unit of emergent many-body spin systems.
Results pave an important avenue to benchmark, or even predict, the outputs of the costly INS experiments.
arXiv Detail & Related papers (2023-04-12T20:12:28Z) - Measurement-induced entanglement and teleportation on a noisy quantum
processor [105.44548669906976]
We investigate measurement-induced quantum information phases on up to 70 superconducting qubits.
We use a duality mapping, to avoid mid-circuit measurement and access different manifestations of the underlying phases.
Our work demonstrates an approach to realize measurement-induced physics at scales that are at the limits of current NISQ processors.
arXiv Detail & Related papers (2023-03-08T18:41:53Z) - Quantum emulation of the transient dynamics in the multistate
Landau-Zener model [50.591267188664666]
We study the transient dynamics in the multistate Landau-Zener model as a function of the Landau-Zener velocity.
Our experiments pave the way for more complex simulations with qubits coupled to an engineered bosonic mode spectrum.
arXiv Detail & Related papers (2022-11-26T15:04:11Z) - Optical control of the complex phase of a quantum ground state amplitude [0.0]
We discuss how coherent driving of a two-level quantum system can be used to induce a complex phase on the ground state.
Coherent dynamics in a two-level subspace provides relative phases and is an essential building block for more advanced dynamics in larger systems.
arXiv Detail & Related papers (2022-04-08T11:36:16Z) - Generation and structuring of multipartite entanglement in Josephson
parametric system [0.0]
vacuum state of a quantum field may act as a key element for the generation of multipartite quantum entanglement.
We achieve generation of genuine tripartite entangled state and its control by the use of the phase difference between two continuous pump tones.
Our scheme provides a comprehensive control toolbox for the entanglement structure and allows us to demonstrate, for first time to our knowledge, genuine quadripartite entanglement of microwave modes.
arXiv Detail & Related papers (2022-03-17T11:16:32Z) - Probing quantum information propagation with out-of-time-ordered
correlators [41.12790913835594]
Small-scale quantum information processors hold the promise to efficiently emulate many-body quantum systems.
Here, we demonstrate the measurement of out-of-time-ordered correlators (OTOCs)
A central requirement for our experiments is the ability to coherently reverse time evolution.
arXiv Detail & Related papers (2021-02-23T15:29:08Z) - Superposition of two-mode squeezed states for quantum information
processing and quantum sensing [55.41644538483948]
We investigate superpositions of two-mode squeezed states (TMSSs)
TMSSs have potential applications to quantum information processing and quantum sensing.
arXiv Detail & Related papers (2021-02-01T18:09:01Z) - Spin Entanglement and Magnetic Competition via Long-range Interactions
in Spinor Quantum Optical Lattices [62.997667081978825]
We study the effects of cavity mediated long range magnetic interactions and optical lattices in ultracold matter.
We find that global interactions modify the underlying magnetic character of the system while introducing competition scenarios.
These allow new alternatives toward the design of robust mechanisms for quantum information purposes.
arXiv Detail & Related papers (2020-11-16T08:03:44Z) - QuTiP-BoFiN: A bosonic and fermionic numerical
hierarchical-equations-of-motion library with applications in
light-harvesting, quantum control, and single-molecule electronics [51.15339237964982]
"hierarchical equations of motion" (HEOM) is a powerful exact numerical approach to solve the dynamics.
It has been extended and applied to problems in solid-state physics, optics, single-molecule electronics, and biological physics.
We present a numerical library in Python, integrated with the powerful QuTiP platform, which implements the HEOM for both bosonic and fermionic environments.
arXiv Detail & Related papers (2020-10-21T07:54:56Z)
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.