Rotation sensing with trapped ions

Campbell, W. C.; Hamilton, Paul

doi:10.1088/1361-6455/aa5a8f

Cited by 57 publications

(44 citation statements)

References 25 publications

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“…Of course, extremely high sensitivities have to be reached, for these detectors to be operational. However, even if the present technology might not be up to the required sensitivities, the intense activity deployed in recent years in this field, invoking ring lasers, atom interferometers, atom lasers, anomalous spin-precession, trapped atoms and quantum interference (see References [30,31,32,33,34,35,36,37,38,39,40,41] and references therein), besides the incredible sensitivities obtained so far in gyroscope technology and exhibited in the Gravity Probe B experiment [17,18], make us confident in that this kind of detectors may be operating in the foreseeable future. As already mentioned in the Introduction, the association of gravitational radiation and vorticity was first put in evidence from the study of the space-time outside the source.…”

Section: Discussionmentioning

confidence: 99%

Gravitational Radiation, Vorticity And Super–Energy: A Conspicuous Threesome

Herrera

2019

Universe

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We elaborate on the link relating gravitational radiation, vorticity and a flux of super-energy on the plane orthogonal to the vorticity vector. We examine the vorticity appearing in the congruence of observers at the outside of the source, as well as the vorticity of the fluid distribution, the source of the gravitational radiation is made of. The information provided by the study of the physical aspects of the source poses new questions which could, in principle, be solved by the observational evidence. Besides the study of the theoretical issues associated to such relationship, we also stress the new observational possibilities to detect gravitational radiation, appearing as consequence of the above mentioned link. The high degree of development achieved in the gyroscope technology, as well as recent proposals to detect rotations by means of ring lasers, atom interferometers, atom lasers and anomalous spin-precession experiments, lead us to believe that an alternative to the laser interferometers used so far to detect gravitational waves, may be implemented based on the detection of the vorticity associated with gravitational radiation. Additionally, this kind of detectors might be able to elucidate the open question about the physical properties of the tail of the waves appearing as the consequence of the violation of the Huygens's principle in general relativity. *

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Section: Discussionmentioning

confidence: 99%

Gravitational Radiation, Vorticity And Super–Energy: A Conspicuous Threesome

Herrera

2019

Universe

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“…On the other hand, our Sagnac interferometry scheme could be applied to other many-body systems, such as trapped ions [11]. A protocol for using trapped ions to measure rotations via repeated round-trips Sagnac interferometry is proposed recently [36]. By using the GHZ state [54], the rotation sensitivity can also be improved.…”

Section: Discussionmentioning

confidence: 99%

“…Sagnac effect describes the phase shift accumulation between two counter-propagating waves around a closed path in a rotating frame [30]. Based upon the Sagnac effect, Sagnac interferometers for measuring rotation frequency have been realized via ring lasers [31], atoms [32][33][34][35] and trapped ions [36]. Recently, a Sagnac interferometry with a single-atom clock [37] have been proposed via combing the techniques of state-dependent manipulations and Ramsey pulses.…”

Section: Introductionmentioning

confidence: 99%

Heisenberg-limited Sagnac interferometer with multiparticle states

et al. 2017

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The Sagnac interferometry has been widely used to measure rotation frequency. Beyond the conventional single-particle Sagnac interferometry, we propose an atomic Sagnac interferometry via multi-particle entangled states. In our scheme, an ensemble of entangled two-state Bose atoms are moved in a ring by a state-dependent rotating potential and then are recombined for interference via Ramsey pulses after a specific time determined by the state-dependent rotating potential. The ultimate rotation sensitivity can be improved to the Heisenberg limit if the initial internal degrees of freedom are entangled. By implementing parity measurement, the ultimate measurement precision can be saturated and the achieved measurement precisions approach to the Heisenberg limit. Our results provide a promising way to exploit many-body quantum entanglement in precision metrology of rotation sensing.

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“…By contrast, the free-evolution in trapped matter-wave interferometers (TMIs) occurs within a confining potential, typically with either a toroidal [18][19][20][21] or harmonic geometry [22][23][24][25]. In this paper I will focus on the latter.…”

Section: Introductionmentioning

confidence: 99%

Systematic effects in two-dimensional trapped matter-wave interferometers

West¹

2019

Phys. Rev. A

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Trapped matter-wave interferometers (TMIs) present a platform for precision sensing within a compact apparatus, extending coherence time by repeated traversal of a confining potential. However, imperfections in this potential can introduce unwanted systematic effects, particularly when combined with errors in the associated beamsplitter operations. This can affect both the interferometer phase and visibility, and can make the performance more sensitive to other experimental imperfections. I examine the character and degree of these systematic effects, in particular within the context of 2D TMIs applicable for rotation sensing. I show that current experimental control can enable these interferometers to operate in a regime robust against experimental imperfections. II. TRAPPED MATTER-WAVE INTERFEROMETRYA. Interferometer Sequence

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Rotation sensing with trapped ions

Cited by 57 publications

References 25 publications

Gravitational Radiation, Vorticity And Super–Energy: A Conspicuous Threesome

Gravitational Radiation, Vorticity And Super–Energy: A Conspicuous Threesome

Heisenberg-limited Sagnac interferometer with multiparticle states

Systematic effects in two-dimensional trapped matter-wave interferometers

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