Atomic Quadrupole Moment Measurement Using Dynamic Decoupling
| Autor: | Roee Ozeri, Ravid Shaniv, Nitzan Akerman |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
Angular momentum Quantum Physics FOS: Physical sciences General Physics and Astronomy Decoupling (cosmology) 01 natural sciences Atomic clock 010305 fluids & plasmas Magnetic field Quantization (physics) Quantum mechanics 0103 physical sciences Quadrupole Atomic physics Quantum Physics (quant-ph) 010306 general physics Quantum Order of magnitude |
| Zdroj: | Physical review letters. 116(14) |
| ISSN: | 1079-7114 |
| Popis: | We present a method that uses dynamic decoupling of a multi-level quantum probe to distinguish small frequency shifts that depend on $m^2_{j}$, where $m^2_{j}$ is the angular momentum of level $\left|j\right\rangle$ along the quantization axis, from large noisy shifts that are linear in $m_{j}$, such as those due to magnetic field noise. Using this method we measured the electric quadrupole moment of the $4D_{\frac{5}{2}}$ level in $^{88}Sr^{+}$ to be $2.973^{+0.026}_{-0.033}\, ea_{0}^{2}$. Our measurement improves the uncertainty of this value by an order of magnitude and thus helps mitigate an important systematic uncertainty in $^{88}Sr^{+}$ based optical atomic clocks and verifies complicated many-body quantum calculations. |
| Databáze: | OpenAIRE |
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