scholarly journals The matter-wave laser interferometer gravitation antenna (MIGA): New perspectives for fundamental physics and geosciences

2014 ◽  
Vol 4 ◽  
pp. 01004 ◽  
Author(s):  
B. Canuel ◽  
L. Amand ◽  
A. Bertoldi ◽  
W. Chaibi ◽  
R. Geiger ◽  
...  
Keyword(s):  
Laser Interferometer ◽  
Matter Wave ◽  
Fundamental Physics ◽  
Wave Laser

scholarly journals Ultracold atom interferometry in space

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Maike D. Lachmann ◽  
Holger Ahlers ◽  
Dennis Becker ◽  
Aline N. Dinkelaker ◽  
Jens Grosse ◽  
...  
Keyword(s):  
Spatial Coherence ◽  
Free Fall ◽  
Atom Interferometry ◽  
Matter Wave ◽  
Sounding Rocket ◽  
Ultracold Atom ◽  
Fundamental Physics ◽  
Light Pulses ◽  
Bose Einstein ◽  
Promising Source

AbstractBose-Einstein condensates (BECs) in free fall constitute a promising source for space-borne interferometry. Indeed, BECs enjoy a slowly expanding wave function, display a large spatial coherence and can be engineered and probed by optical techniques. Here we explore matter-wave fringes of multiple spinor components of a BEC released in free fall employing light-pulses to drive Bragg processes and induce phase imprinting on a sounding rocket. The prevailing microgravity played a crucial role in the observation of these interferences which not only reveal the spatial coherence of the condensates but also allow us to measure differential forces. Our work marks the beginning of matter-wave interferometry in space with future applications in fundamental physics, navigation and earth observation.

scholarly journals Small-Sized Interferometer with Fabry–Perot Resonators for Gravitational Wave Detection

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1877
Author(s):  
Nikolai Petrov ◽  
Vladislav Pustovoit
Keyword(s):  
Correlation Function ◽  
Gravitational Waves ◽  
Laser Interferometer ◽  
Zero Order ◽  
Wave Detection ◽  
Resonant Modes ◽  
Fabry Perot ◽  
Spatially Distributed ◽  
Wave Laser ◽  
Higher Sensitivity

It is highly desirable to have a compact laser interferometer for detecting gravitational waves. Here, a small-sized tabletop laser interferometer with Fabry–Perot resonators consisting of two spatially distributed “mirrors” for detecting gravitational waves is proposed. It is shown that the spectral resolution of 10−23 cm−1 can be achieved at a distance between mirrors of only 1–3 m. The influence of light absorption in crystals on the limiting resolution of such resonators is also studied. A higher sensitivity of the interferometer to shorter-wave laser radiation is shown. A method for detecting gravitational waves is proposed based on the measurement of the correlation function of the radiation intensities of non-zero-order resonant modes from the two arms of the Mach–Zehnder interferometer.

scholarly journals The gravitational-wave physics

2017 ◽  
Vol 4 (5) ◽  
pp. 687-706 ◽  
Author(s):  
Rong-Gen Cai ◽  
Zhoujian Cao ◽  
Zong-Kuan Guo ◽  
Shao-Jiang Wang ◽  
Tao Yang
Keyword(s):  
Gravitational Wave ◽  
Gravitational Waves ◽  
Laser Interferometer ◽  
Direct Detection ◽  
Fundamental Physics ◽  
First Order ◽  
Compact Binary ◽  
First Order Phase Transition ◽  
First Order Phase ◽  
The Universe

Abstract The direct detection of gravitational wave by Laser Interferometer Gravitational-Wave Observatory indicates the coming of the era of gravitational-wave astronomy and gravitational-wave cosmology. It is expected that more and more gravitational-wave events will be detected by currently existing and planned gravitational-wave detectors. The gravitational waves open a new window to explore the Universe and various mysteries will be disclosed through the gravitational-wave detection, combined with other cosmological probes. The gravitational-wave physics is not only related to gravitation theory, but also is closely tied to fundamental physics, cosmology and astrophysics. In this review article, three kinds of sources of gravitational waves and relevant physics will be discussed, namely gravitational waves produced during the inflation and preheating phases of the Universe, the gravitational waves produced during the first-order phase transition as the Universe cools down and the gravitational waves from the three phases: inspiral, merger and ringdown of a compact binary system, respectively. We will also discuss the gravitational waves as a standard siren to explore the evolution of the Universe.

FUNDAMENTAL PHYSICS ACTIVITIES IN THE HME DIRECTORATE OF THE EUROPEAN SPACE AGENCY

2007 ◽  
Vol 16 (12a) ◽  
pp. 1957-1966
Author(s):  
LUIGI CACCIAPUOTI ◽  
OLIVIER MINSTER
Keyword(s):  
Inertial Sensors ◽  
European Space Agency ◽  
Atomic Clock ◽  
Space Station ◽  
Matter Wave ◽  
Microgravity Environment ◽  
Atomic Clocks ◽  
Space Applications ◽  
Fundamental Physics ◽  
Space Agency

The Human Spaceflight, Microgravity, and Exploration (HME) Directorate of the European Space Agency is strongly involved in fundamental physics research. One of the major activities in this field is represented by the ACES (Atomic Clock Ensemble in Space) mission. ACES will demonstrate the high performances of a new generation of atomic clocks in the microgravity environment of the International Space Station (ISS). Following ACES, a vigorous research program has been recently approved to develop a second generation of atomic quantum sensors for space applications: atomic clocks in the optical domain, aiming at fractional frequency stability and accuracy in the low 10-18 regime; inertial sensors based on matter-wave interferometry for the detection of tiny accelerations and rotations; a facility to study degenerate Bose gases in space. Tests of quantum physics on large distance scales represent another important issue addressed in the HME program. A quantum communication optical terminal has been proposed to perform a test of Bell's inequalities on pairs of entangled photons emitted by a source located on the ISS and detected by two ground stations. In this paper, present activities and future plans will be described and discussed.

Vacuum system design for the 300 m gravitational wave laser interferometer in Japan (TAMA300)

Vacuum ◽  
1996 ◽  
Vol 47 (6-8) ◽  
pp. 609-611 ◽  
Author(s):  
Y Saito ◽  
N Matuda ◽  
Y Ogawa ◽  
G Horikoshi
Keyword(s):  
Gravitational Wave ◽  
System Design ◽  
Laser Interferometer ◽  
Vacuum System ◽  
Wave Laser

Vacuum system of the 300m gravitational wave laser interferometer in Japan (TAMA300)

Vacuum ◽  
1999 ◽  
Vol 53 (1-2) ◽  
pp. 353-356 ◽  
Author(s):  
Y. Saito ◽  
Y. Ogawa ◽  
G. Horikoshi ◽  
N. Matuda ◽  
R. Takahashi ◽  
...  
Keyword(s):  
Gravitational Wave ◽  
Laser Interferometer ◽  
Vacuum System ◽  
Wave Laser

Operational status of the vacuum system of the 300m gravitational wave laser interferometer, TAMA300

Vacuum ◽  
2001 ◽  
Vol 60 (1-2) ◽  
pp. 3-8 ◽  
Author(s):  
Y. Saito ◽  
G. Horikoshi ◽  
R. Takahashi ◽  
M. Fukushima
Keyword(s):  
Gravitational Wave ◽  
Laser Interferometer ◽  
Vacuum System ◽  
Wave Laser

scholarly journals Two-wave laser displacement meter

2021 ◽  
Vol 2127 (1) ◽  
pp. 012053
Author(s):  
E A Lavrov ◽  
M M Mazur ◽  
V N Shorin ◽  
Y A Suddenok
Keyword(s):  
Temperature Profile ◽  
Laser Interferometer ◽  
Michelson Interferometer ◽  
Weather Condition ◽  
Position Resolution ◽  
Displacement Mode ◽  
Laser Displacement Meter ◽  
Wave Laser ◽  
Profile Amplitude ◽  
Optical Schematic

Abstract A two-wave laser displacement meter based on Michelson interferometer has been developed for measurements at an unknown temperature profile at the measurement trace. The requirements for meteorological parameters support during displacement measurements using the offered laser interferometer are less strict compared to using an one-wave interferometer. The article describes the optical schematic of the device. The results for the measurements of the developed laser interferometer for realization of the displacement unit within the limits of 60 m are presented. The weather condition influence on measurements was estimated. The application of pseudorandom displacement of the interferometer’s reference arm with accumulation made possible the reflector position resolution down to 0.01 μm the stoped-displacement mode, and down to 0.05 μm at the displacement mode. It was shown that such resolution allows to measure displacements at trace up to 60 m with inaccuracies less than 10 μm at the temperature profile amplitude up to 1 °C.

scholarly journals An ultra-high flux matter-wave laser from a highly flexible ioffe-pritchard trap

2014 ◽  
Author(s):  
Βασιλική Μπόλπαση
Keyword(s):  
High Resolution ◽  
Magnetic Trap ◽  
Matter Wave ◽  
High Resolution Spectroscopy ◽  
High Flux ◽  
Atom Beam ◽  
Atom Number ◽  
Wave Laser ◽  
Atom Lasers ◽  
Bose Einstein

This thesis describes the development and construction of a machine for producinghigh atom-number Bose-Einstein Condensates (BECs). Emphasis is given to thenovel Ioe-Pritchard magnetic trap used, that consists exclusively of circular coils.This allowed us to achieve higher gradients and thus tighter connements [1].This thesis also describes a novel atom-laser output-coupler based on time dependentadiabatic potentials (TDAP) [2]. In this method strong rf elds are usedto deform the trapping potential. Contrary to the traditional weak rf methods thatextracts the atoms from the center of the BEC, the TDAP atom lasers emerge fromthe edge of the condensate. This provides the atom lasers with low divergence.Furthermore, the atoms are outcoupled from the BEC at an arbitrarily large rateleading to uxes per trapped atom sixteen times higher compared to the brightestquasi-continuous atom laser.Finally, presented is the coldest thermal atom beam to date. Using the TDAPoutcoupling, we produced thermal atom beams with temperatures as low as 200 nK,which makes it, by two orders of magnitude, the coldest thermal beam ever observed.Something like that would be very useful for high-resolution spectroscopy of ultracoldcollisions.

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