Results 81 to 90 of about 646,274 (209)

Spin-based optical quantum gates via Pauli blocking in semiconductor quantum dots

open access: yes, 2002
We present a solid-state implementation of ultrafast conditional quantum gates. Our proposal for a quantum-computing device is based on the spin degrees of freedom of electrons confined in semiconductor quantum dots, thus benefiting from relatively long ...
  +11 more
core   +1 more source

High-Power Single-Frequency Continuous-Wave Tunable 1064/532 nm Dual-Wavelength Laser

open access: yesMicromachines
A high-power single-frequency continuous-wave wideband continuously tunable dual-wavelength laser at 1064/532 nm is presented in this paper. Firstly, a thermally insensitive cavity containing a type-I phase-matching LiB3O5 crystal and an uncoated quartz ...
Weina Peng   +4 more
doaj   +1 more source

Effect of Specimen Size on Laser Scribing Width and Depth of Al2O3 Ceramics: Experiment and Numerical Simulation

open access: yesMATEC Web of Conferences, 2016
To obtain high precision and quality of laser ceramic scribing , people should consider the laser scribing parameters and the geometries of specimen size.
Wang Shu, Huang Kaijin, Tang Lin
doaj   +1 more source

Efficient blue generation from all-solid-state Q-switched Nd:YAG lasers

open access: yes, 2002
This thesis describes work carried out at Southampton University that has been directed towards achieving high-power all-solid-state blue sources using two low-gain transitions of Nd:YAG.
Felgate, Nigel Stephen
core  

Modification of the Surface Layer of Grey Cast Iron by Laser Heat Treatment

open access: yesLubricants
This paper presents possible modifications to the properties of grey cast iron by laser heat treatment. These modifications are analyzed especially with regard to wear properties as a result of graphite content, which is a well-known solid lubricant ...
Marta Paczkowska
doaj   +1 more source

A Tunable Mid-Infrared Solid-State Laser with a Compact Thermal Control System

open access: yesApplied Sciences, 2018
Tunable mid-infrared lasers are widely used in laser spectroscopy, gas sensing and many other related areas. In order to solve heat dissipation problems and improve the environmental temperature adaptability of solid-state laser sources, a tunable all ...
Deyang Yu   +5 more
doaj   +1 more source

Design of a Quantum Source of High-Frequency Gravitational Waves (HFGW) and Test Methodology

open access: yes, 2004
The generation of High-Frequency Gravitational Waves (HFGW) has been identified as the required breakthrough that will lead to new forms of space propulsion. Many techniques have been devised to generate HFGW, but most of them exhibit marginal efficiency,
Fontana, Giorgio
core   +1 more source

Attosecond control of electrons emitted from a nanoscale metal tip

open access: yes, 2011
Attosecond science is based on steering of electrons with the electric field of well-controlled femtosecond laser pulses. It has led to, for example, the generation of XUV light pulses with a duration in the sub-100-attosecond regime, to the measurement ...
A Apolonski   +30 more
core   +1 more source

Diamond platforms for nanoscale photonics and metrology [PDF]

open access: yes, 2015
Observing and controlling solid state quantum systems is an area of intense research in quantum science today. Such systems offer the natural advantage of being bound into a solid device, eliminating the need for laser cooling and trapping of atoms in ...
Shields, Brendan John
core  

Preparation and decay of a single quantum of vibration at ambient conditions

open access: yes, 2019
A single quantum of excitation of a mechanical oscillator is a textbook example of the principles of quantum physics. Mechanical oscillators, despite their pervasive presence in nature and modern technology, do not generically exist in an excited Fock ...
Anderson, Mitchell D.   +5 more
core   +1 more source

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