Related Experiment Video
Updated: May 4, 2026
06:42
Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
9.0K
Photonic coherent state transfer with Hamiltonian dynamics
Optics Letters
|December 25, 2013
Summary
Researchers achieved near-perfect light wave transfer using quantum state emulation. This method efficiently moves excitations across 11 sites for both classical light and single photons, even manipulating polarization.
Area of Science:
- Quantum physics
- Photonics
- Waveguide technology
Background:
- Quantum state transfer protocols are crucial for quantum information processing.
- Previous methods often require complex setups or are limited in fidelity.
- Emulating quantum dynamics in classical systems offers new avenues for robust information transfer.
Purpose of the Study:
- To demonstrate near-perfect light wave transfer using quantum state emulation.
- To investigate the fidelity and applicability of this method for classical and quantum light.
- To explore the integration of polarization as an additional degree of freedom in the transport protocol.
Main Methods:
- Emulation of quantum state transfer on a lattice using Hamiltonian dynamics.
- Implementation of time-dependent intersite couplings in a waveguide structure.
- Utilizing polarization as a degree of freedom for light transport.
Main Results:
- Achieved near-perfect light wave transfer with a fidelity of 0.93 over 11 sites.
- Demonstrated successful transfer for both classical light and single photons.
- Showcased polarization rotation operations up to 40° during state transfer.
Conclusions:
- The developed method provides a robust platform for high-fidelity light wave transfer.
- This technique is versatile, applicable to both classical and quantum light regimes.
- Introducing polarization adds a new dimension for advanced photonic transport protocols.
Related Concept Videos
01:12Fermi Level Dynamics
1.1K
The vacuum level denotes the energy threshold required for an electron to escape from a material surface. It is usually positioned above the conduction band of a semiconductor and acts as a benchmark for comparing electron energies within various materials.
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
Electron affinity in semiconductors refers to the energy gap between the minimum of its conduction band and the vacuum level and it is a critical parameter in determining how easily a semiconductor can accept additional electrons.
The work...
1.1K
01:21State Space to Transfer Function
691
The conversion of state-space representation to a transfer function is a fundamental process in system analysis. It provides a method for transitioning from a time-domain description to a frequency-domain representation, which is crucial for simplifying the analysis and design of control systems.
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
691
01:23Transfer Function to State Space
985
State-space representation is a powerful tool for simulating physical systems on digital computers, necessitating the conversion of the transfer function into state-space form. Consider an nth-order linear differential equation with constant coefficients, like those encountered in an RLC circuit. The state variables are selected as the output and its n−1 derivatives. Differentiating these variables and substituting them back into the original equation produces the state equations.
In an...
In an...
985
01:30Electromagnetic Waves in Matter
2.8K
Electromagnetic waves can travel in the vacuum as well as in matter. For example light, which is an electromagnetic wave, can travel through air, water, or glass.
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium,...
Consider the electromagnetic wave passing through a dielectric medium. In such a case, Maxwell's equations get modified. In Ampere's law, ε0 , the dielectric permittivity of free space is replaced with ε, the permittivity of dielectric. Also, the vacuum permeability μ0 is replaced by the permeability of the medium,...
2.8K
01:23Equilibrium Conditions for a Particle
2.4K
When an object is in equilibrium, it is either at rest or moving with a constant velocity. There are two types of equilibrium: static and dynamic. Static equilibrium occurs when an object is at rest, while dynamic equilibrium occurs when an object is moving with a constant velocity. In both cases, there must be a balance of forces acting on the object.
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
2.4K
02:45The Quantum-Mechanical Model of an Atom
47.1K
Shortly after de Broglie published his ideas that the electron in a hydrogen atom could be better thought of as being a circular standing wave instead of a particle moving in quantized circular orbits, Erwin Schrödinger extended de Broglie’s work by deriving what is now known as the Schrödinger equation. When Schrödinger applied his equation to hydrogen-like atoms, he was able to reproduce Bohr’s expression for the energy and, thus, the Rydberg formula governing...
47.1K