We propose experimentally feasible means for nondestructive thermometry of homogeneous Bose-Einstein condensates in different spatial dimensions (d∈{1,2,3}). Our impurity-based protocol suggests that ...the fundamental error bound on thermometry at the subnanokelvin domain depends highly on the dimension, in that the higher the dimension the better the precision. Furthermore, suboptimal thermometry of the condensates by using measurements that are experimentally feasible is explored. We specifically focus on measuring position and momentum of the impurity that belong to the family of Gaussian measurements. We show that, generally, experimentally feasible measurements are far from optimal, except in one dimension, where position measurements are indeed optimal. This makes realistic experiments perform very well at few nanokelvin temperatures for all dimensions, and at subnanokelvin temperatures in the one-dimensional scenario. These results take a significant step towards experimental realization of probe-based quantum thermometry of Bose-Einstein condensates, as it deals with them in one, two, and three dimensions and uses feasible measurements applicable in current experimental setups.
We propose the use of phonon$\unicode{x2013}$mediated interactions as an
entanglement resource to engineer
Einstein$\unicode{x2013}$Podolsky$\unicode{x2013}$Rosen (EPR) correlations and
to perform ...teleportation of collective spin states in
two$\unicode{x2013}$dimensional ion crystals. We emulate continuous variable
quantum teleportation protocols between subsystems corresponding to different
nuclear spin degrees of freedom. In each of them, a quantum state is encoded in
an electronic spin degree of freedom that couples to the vibrational modes of
the crystal. We show that high fidelity teleportation of spin-coherent states
and their phase-displaced variant, entangled spin-squeezed states, and Dicke
states, is possible for realistic experimental conditions in arrays from a few
tens to a few hundred ions.
Phys. Rev. Research 4, 023191 (2022) We propose experimentally feasible means for non-destructive thermometry of
homogeneous Bose Einstein condensates in different spatial dimensions
...($d\in\{1,2,3\}$). Our impurity based protocol suggests that the fundamental
error bound on thermometry at the sub nano Kelvin domain depends highly on the
dimension, in that the higher the dimension the better the precision.
Furthermore, sub-optimal thermometry of the condensates by using measurements
that are experimentally feasible is explored. We specifically focus on
measuring position and momentum of the impurity that belong to the family of
Gaussian measurements. We show that, generally, experimentally feasible
measurements are far from optimal, except in 1D, where position measurements
are indeed optimal. This makes realistic experiments perform very well at few
nano Kelvin temperatures for all dimensions, and at sub nano Kelvin
temperatures in the one dimensional scenario. These results take a significant
step towards experimental realisation of probe-based quantum thermometry of
Bose Einstein condensates, as it deals with them in one, two and three
dimensions and uses feasible measurements applicable in current experimental
setups.
We propose experimentally feasible means for non-destructive thermometry of homogeneous Bose Einstein condensates in different spatial dimensions (\(d\in\{1,2,3\}\)). Our impurity based protocol ...suggests that the fundamental error bound on thermometry at the sub nano Kelvin domain depends highly on the dimension, in that the higher the dimension the better the precision. Furthermore, sub-optimal thermometry of the condensates by using measurements that are experimentally feasible is explored. We specifically focus on measuring position and momentum of the impurity that belong to the family of Gaussian measurements. We show that, generally, experimentally feasible measurements are far from optimal, except in 1D, where position measurements are indeed optimal. This makes realistic experiments perform very well at few nano Kelvin temperatures for all dimensions, and at sub nano Kelvin temperatures in the one dimensional scenario. These results take a significant step towards experimental realisation of probe-based quantum thermometry of Bose Einstein condensates, as it deals with them in one, two and three dimensions and uses feasible measurements applicable in current experimental setups.
Salicylic acid (SA) in different concentration were used to assess its individual effect as well as combined impact with 3% calcium chloride (CaCl
2
) on Swat No. 8 variety of peach stored at ...refrigerated temperature (6 ± 2 °C) for 21 days. Interestingly, the results revealed that applying 2 mmol L
−1
SA with 3% CaCl
2
maintained maximum nutritional value and least decay percent (44.1%) as compared to other treatments during storage. Moreover, this combination also exhibited significant weight loss and chilling injury at 6 ± 2 °C whereas increased levels of total phenolic, flavonoids, tannin, alkaloid, ascorbic acid, and antioxidant activity were observed as compared to other treatments. The combination treatment (2 mmol L
−1
SA with 3% CaCl
2
) maintained other sensory attributes of peach fruit during refrigerated storage, therefore, its commercial use was recommended to store peach fruit for up to three weeks without any significant nutritional and physical loss.
Enantiomerically and diastereomerically pure thiourea derivative (compound
I
) has been synthesized in two steps starting from (
S
)-1-phenylethanamine and 1,2-dibromoethane. Compound
I
was screened ...for various biochemical parameters including blood glucose level, serum total cholesterol level, serum bilirubin and triglyceride levels, serum glutamate pyruvate transaminase (SGPT) and alkaline phosphatase (ALP) activity in New Zealand White (NZW) rabbits. Compound
I
was also screened for brine shrimp cytotoxicity, antileishmanial and antioxidant activity. Acute toxicity tests in NZW rabbits were performed and the results showed that compound
I
was safe up to 2 mg/mL/kg rabbit body weight. For the blood parameters, it was found that compound
I
caused slightly reduced blood glucose level, increased blood serum bilirubin, ALP and SGPT levels, and caused no changes in cholesterol and triglyceride levels. Thus, results show that compound
I
possesses good cytotoxic, poor antileishmanial activity, and no prominent antioxidant activity.
