Related Experiment Video
Updated: Dec 20, 2025
05:39
Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
10.1K
Quantum State Engineering by Shortcuts to Adiabaticity in Interacting Spin-Boson Systems
Obinna Abah1, Ricardo Puebla1, Mauro Paternostro1
1Centre for Theoretical Atomic, Molecular and Optical Physics, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, United Kingdom.
Physical Review Letters
|May 23, 2020
Summary
Researchers developed a fast method to create nonclassical states in bosonic modes using a Jaynes-Cummings interaction. This technique generates Fock states and Schrödinger cat states, advancing quantum state preparation for experiments.
Area of Science:
- Quantum Optics
- Quantum Information Science
- Atomic, Molecular, and Optical Physics
Background:
- Nonclassical states of light are crucial for quantum technologies.
- Generating these states efficiently and reliably remains a challenge.
- Existing methods often lack speed or versatility.
Purpose of the Study:
- To present a novel framework for preparing nonclassical states of bosonic modes.
- To demonstrate the generation of arbitrary Fock states and Schrödinger cat states.
- To explore new types of nonclassical states, such as photon-shifted states.
Main Methods:
- Utilizing shortcuts to adiabaticity.
- Exploiting coherent excitation exchange between a bosonic mode and a two-level system.
- Leveraging the Jaynes-Cummings interaction mechanism.
Main Results:
- A fast and robust protocol for generating nonclassical states is established.
- Arbitrary Fock states and Schrödinger cat-like superpositions are successfully generated.
- Photon-shifted states with enhanced nonclassicality are produced, surpassing standard photon-added states.
Conclusions:
- The proposed framework offers a versatile and efficient route to quantum state engineering.
- The protocol's reliance on the ubiquitous spin-boson interaction makes it experimentally feasible.
- This work paves the way for advanced quantum state preparation in state-of-the-art experiments.
Related Concept Videos
01:14Atomic Nuclei: Nuclear Spin State Population Distribution
2.2K
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
2.2K
01:03Atomic Nuclei: Nuclear Spin State Overview
1.8K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.8K
01:21Path Between Thermodynamics States
3.8K
Consider the two thermodynamic processes involving an ideal gas that are represented by paths AC and ABC in Figure 1:
3.8K
01:08Spin–Spin Coupling Constant: Overview
1.3K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.3K
01:18Adiabatic Processes for an Ideal Gas
3.8K
When an ideal gas is compressed adiabatically, that is, without adding heat, work is done on it, and its temperature increases. In an adiabatic expansion, the gas does work, and its temperature drops. Adiabatic compressions actually occur in the cylinders of a car, where the compressions of the gas-air mixture take place so quickly that there is no time for the mixture to exchange heat with its environment. Nevertheless, because work is done on the mixture during the compression, its...
3.8K
03:25Free Energy Changes for Nonstandard States
13.2K
The free energy change for a process taking place with reactants and products present under nonstandard conditions (pressures other than 1 bar; concentrations other than 1 M) is related to the standard free energy change according to this equation:
13.2K