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Questions tagged [rydberg-states]

This state is for questions relating to Rydberg State which is a state of an atom or molecule in which one of the electrons has been excited to a high principal quantum number orbital.

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How can we have two independent parameters (physically) during Rabi Oscillations happening in Rydberg Atoms?

Rabi Oscillations are explained as electric interaction between atom and EM field, here. This can be true for any two-level system with specific interactions that can lead to the Hamiltonian given in ...
Prabhat's user avatar
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3 votes
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Explanation of the Rydberg interaction hamiltonian and its controllability

I have been reading about Rydberg atoms and their interactions and the possibility of quantum computation using this platform and I have come across this- The quantum dynamics of this system is ...
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Why does a Rydberg atom increases the excitation energy threshold of its neighboring atoms?

The hydrogen atom has one electron with specific energy levels allowed, If the electron is at the lowest energy level -13.59, then it takes a photon with energy of more than 10.19 but less than 12.08 ...
James's user avatar
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7 votes
0 answers
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How can an $n=25$ Rydberg state exist in a solid? What does the wave function look like?

Phys.org's April 15, 2022 Ancient Namibian stone could hold key to future quantum computers begins: A special form of light made using an ancient Namibian gemstone could be the key to new light-based ...
uhoh's user avatar
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Solving Young Sheldon's 100th episode vanity card

Please define the terms. Below is Chuck Lorre's 700th vanity card which congratulates Young Sheldon on reaching 100 episodes. Part 1. Find $x$ in $J_0(x)=0$. --> I guess this refers to Bessel of ...
BCLC's user avatar
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4 votes
3 answers
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Can the hydrogen Rydberg decay cascade be resolved into individual lines?

This is a technical question as a follow-up to the discussion in Would a high energy Hydrogen atom start emanating electromagnetic radiation? Suppose that I have a hydrogen atom that is excited, at $t=...
Emilio Pisanty's user avatar
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Why is the screening coefficient, $\sigma_K$, in Moseley's law only constant for high $Z$ and how can it be anything other than unity?

In trying to understand the screening coefficient, $\sigma_K$ and the limitations of Moseley's law (why only valid for high $Z$) I came across a section of this lab script I found online: Moseley’s ...
Skynet's user avatar
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How to understand the hydrogen energy level and its wave function?

I have difficulty to understand this Hydrogen atom's energy level and its wave function. My difficulty is regarding the hydrogen atom itself, not the energy level and the wave function their selves, ...
AirCraft Lover's user avatar
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1 answer
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What system has a spectral series in the radio spectrum?

As an electron energy level has an emission level depending upon the excitation, is it possible for a system such as a Rydberg atom to have emissions in the low side of the frequency range?
Evamentality's user avatar
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Formula for wavelength emitted taking into account the quantum orbital number $l$

Rydberg's formula can be used to find the wavelength emitted due to an electron moving from one energy level $n_i$ to another one $n_f$. But when the Schrödinger's model of the atom is introduced we ...
Kevin's user avatar
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Understanding the following THz-to-optical conversion scheme

When reading Real-time near-field terahertz imaging with atomic optical fluorescence. C. G. Wade, N. Šibalić, N. R. de Melo, J. M. Kondo, C. S. Adams & K. J. Weatherill. Nature Photonics 11, 40–...
user7077252's user avatar
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Nodes in Spherical Harmonics

In Rydberg Atoms book by Thomas F. Gallagher, Page 14, the author provides the general equation of spherical harmonics which is well-known. He states that there exist $l-m$ nodes in the $\theta$ ...
Naps's user avatar
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2 answers
292 views

Schrodinger Equation of a Hydrogen Atom in a Rydberg State

I am not a mathematician, so I really appreciate it if someone could explain it in a simple way. In Rydberg Atoms book by Thomas F. Gallagher, the Schroedinger equation for the H atom in atomic units ...
Naps's user avatar
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How can you explain long lifetime of the Rydberg atoms? [duplicate]

Long lifetimes of the Rydberg atoms seems counterintuitive to me. Intuitive explanation: the higher electron was excited, the more levels below became available for spontaneous decay. So the first ...
Chukcha's user avatar
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Why is EIT needed to story memory using rydberg atoms?

I was going through a paper explaining how the write-in and read-out efficiencies can be increased using cold atoms where they used Rydberg atoms, and mentioned that they were probed using EIT(...
Swaroop Joshi's user avatar
1 vote
0 answers
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Why does the read-out efficiency increase when coupling an atomic ensemble to an optical cavity?

I went through a paper where it mentioned that the read-out efficiency of a quantum memory would be increased by coupling the atomic ensemble with an optical cavity. I think rydberg atoms were used to ...
Swaroop Joshi's user avatar
6 votes
2 answers
1k views

How to explain the long lifetime of Rydberg atoms with Fermi golden rule?

How to explain the long lifetime of Rydberg atoms with Fermi's golden rule? Wikipedia says it is partly due to tiny wavefunction overlap with inner orbitals, but what about the outer ones?
Jason Tao's user avatar
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5 votes
1 answer
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What's the highest-$n$ Rydberg state that's been created and detected experimentally?

Rydberg states form an infinite series of electronic states that asymptotically approach the ionization potential of the atom or molecule, usually in good agreement with the simple Rydberg formula. ...
Emilio Pisanty's user avatar
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What is the highest energy level an electron can reach and still tend to move to a lower state and still "belong" to the atom?

For example, imagine that I excite an electron in order to move it to the 19th energy level (when the lowest possible is, let's say, the 2nd (there are three electrons in total in the atom)). How can ...
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