Exploring Epistemic Models of Qubits: Finite or Infinite Ontic States?

In summary, the conversation discusses the possibility of an epistemic model of a qubit with a finite number of ontic states. The paper mentioned a toy bit with only 4 ontic states, but it may not fully represent a qubit in general. The question is whether there is another model that accurately represents a qubit or if there is a proof that infinite states are necessary.
  • #1
msumm21
218
16
I'm reading the following paper.
https://arxiv.org/abs/1409.1570

Is there an epistemic model of a qubit in which the number of ontic states is finite? I realize Spekkens toy bit discussed in the paper has only 4 ontic states, but it seems to only model a qubit that was prepared in one of 3 quantum states and is not representative of qubit in general.

Is there either another model like Spekkens that does represent a full blown qubit or alternatively a proof that shows infinite states would be required?
 
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  • #2
msumm21 said:
Is there an epistemic model of a qubit in which the number of ontic states is finite?

I don't see how there could be since matching the predictions of QM requires modeling a continuous infinity of possible experimental outcomes.
 

Related to Exploring Epistemic Models of Qubits: Finite or Infinite Ontic States?

1. What is the main purpose of exploring epistemic models of qubits?

The main purpose of exploring epistemic models of qubits is to better understand the nature of quantum information and its relation to physical reality. These models help us to conceptualize and analyze the behavior and properties of qubits, which are the building blocks of quantum computers and other quantum technologies.

2. What are epistemic models of qubits?

Epistemic models of qubits are mathematical representations that describe the possible states and behaviors of qubits, particularly in terms of information and knowledge. These models are based on the concept that quantum information is fundamentally different from classical information and must be treated differently.

3. Are qubits considered to have finite or infinite ontic states?

There is ongoing debate and research about whether qubits have finite or infinite ontic states. Some models suggest that qubits have a finite number of possible states, while others propose that qubits have an infinite number of potential states. This is an area of active investigation and there is currently no consensus among scientists.

4. How do epistemic models of qubits differ from other models of quantum information?

Epistemic models of qubits differ from other models of quantum information in that they focus specifically on the nature of information and knowledge in the quantum realm. These models are particularly interested in the role of observation and measurement in determining the state of a qubit, and how this relates to our understanding of physical reality.

5. What are the potential applications of exploring epistemic models of qubits?

Studying and understanding epistemic models of qubits has the potential to inform the development of new quantum technologies, such as quantum computing and quantum cryptography. These models may also have applications in other fields, such as information theory and cosmology, as they provide insights into the fundamental nature of information and its role in the universe.

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