Related Experiment Video
Updated: Jun 14, 2025
10:28
Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy
Published on: May 27, 2018
8.7K
Chiral Bell-State Transfer via Dissipative Liouvillian Dynamics
Shishir Khandelwal1,2,3, Weijian Chen4, Kater W Murch4
1Department of Applied Physics, <a href="https://ror.org/01swzsf04">University of Geneva</a>, 1211 Geneva, Switzerland.
Physical Review Letters
|August 30, 2024
Summary
This study demonstrates chiral state transfer for quantum information processing, enabling high-fidelity Bell state production from separable states using dissipation engineering.
Area of Science:
- Quantum physics
- Non-Hermitian physics
- Quantum information processing
Background:
- Chiral state transfer near exceptional points is a counterintuitive phenomenon in non-Hermitian physics.
- The practical application of chiral state transfer beyond theoretical concepts remains an open question.
Purpose of the Study:
- To demonstrate chiral state conversion between singlet and triplet Bell states using quantum Liouvillian dynamics.
- To explore the application of chiral state transfer for producing Bell states from separable states with high fidelity.
- To investigate the role of quantum jumps and postselection in enhancing Bell state generation.
Main Methods:
- Utilizing fully quantum Liouvillian dynamics to model the system.
- Implementing chiral state transfer protocols to convert between Bell states.
- Employing postselection techniques to remove quantum jumps and improve fidelity.
Main Results:
- Successfully demonstrated chiral state conversion between singlet and triplet Bell states.
- Achieved high-fidelity chiral production of Bell states from initially separable states over a wide parameter range.
- Showed that postselection of quantum dynamics can yield near-perfect Bell states.
Conclusions:
- This work presents the first application of chiral state transfer in quantum information processing.
- Introduced a novel method for controlling entangled states through dissipation engineering.
- Highlights the potential of non-Hermitian physics phenomena for practical quantum technologies.
Related Concept Videos
02:30Chirality in Nature
13.2K
Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
13.2K
02:25Chirality
23.6K
Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
23.6K
01:58Cooperative Allosteric Transitions
7.9K
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
7.9K
01:18First Law: Particles in Two-dimensional Equilibrium
5.0K
Recall that a particle in equilibrium is one for which the external forces are balanced. Static equilibrium involves objects at rest, and dynamic equilibrium involves objects in motion without acceleration; but it is important to remember that these conditions are relative. For instance, an object may be at rest when viewed from one frame of reference, but that same object would appear to be in motion when viewed by someone moving at a constant velocity.
Newton's first law tells us about...
Newton's first law tells us about...
5.0K
01:23Stability of Equilibrium Configuration
442
Understanding the stability of equilibrium configurations is a fundamental part of mechanical engineering. In any system, there are three distinct types of equilibrium: stable, neutral, and unstable.
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
A stable equilibrium occurs when a system tends to return to its original position when given a small displacement, and the potential energy is at its minimum. An example of a stable equilibrium is when a cantilever beam is fixed at one end and a weight is attached to the other end. If the weight...
442
01:10First Law: Particles in One-dimensional Equilibrium
6.8K
Newton's first law of motion states that a body at rest remains at rest, or if in motion, remains in motion at constant velocity, unless acted on by a net external force. It also states that there must be a cause for any change in velocity (a change in either magnitude or direction) to occur. This cause is a net external force. For example, consider what happens to an object sliding along a rough horizontal surface. The object quickly grinds to a halt, due to the net force of friction. If...
6.8K